iOS: The warm weather is upon us in these parts, and that means higher energy bills as we struggle to keep our homes cool and comfortable. If you're looking for a way to save some money on your power bill this spring and summer, Verde is a free app for the iPad that takes into account how much you pay for electricity, and then runs the numbers for you to let you know how much you can save by making small—or large—changes in your home and habits.

We've shown you how to really save money on your energy bills, but if you're looking for some easier tricks to help you get your toes in the water before doing something more drastic, Verde can help. The app asks you where you live (or uses your device's GPS to determine it - this part is US only) and asks you what you pay per kilowatt hour (usually displayed on your power bill, but the app will make a suggestion if you don't know.) Once the app knows your location and your rate, it then asks you to select the appliances and energy-sucking devices you have in your home from a really well arranged and organized list of equipment.

After the app has your rate, the appliances you use, and the regularity with which you use those appliances, Verde will generate a report for you detailing how much energy you use on average in a day, week, and month, how much each of your appliances costs you every time you use them, and what changes you can make to reduce that cost. Each suggestion is even noted with how many trees you save by changing your habits, but if that doesn't resonate with you, the amount of money you'll save is listed as well.

Verde takes a couple of minutes to get set up and running, but it's a small setup price to pay for the wealth of suggestions the app offers when you're finished. It's worth noting that the app is iPad only, and while it's currently free, its normal price is $4.99—which it returns to after Earth Day, April 22nd. How do you manage your energy costs? Do you have any tips to share? Let's hear them in the comments below.

Verde | iTunes App Store via Addictive Tips

One of the problems with having a lot of accessories plugged in around your computer is that even after you turn everything off they're still draining power. Instructables user schubertj wanted a way to automate the powering off of his speakers, monitors, and printer, so he hacked a USB cable into a power strip so the strip is powered by the computer itself.

Using a set of supplies totaling around $30, the basic premise is pretty simple. When the computer powers on, the USB cable sends power to the power strip and the rest of the devices turn on. When the computer is powered down, so is the power strip. As you'd expect, this is a pretty complicated project that deals with high voltage so you have to be careful, but the end result is a nice automated system that will help cut down your power consumption by looping everything together. You can find the full guide for the project over on Instructables.

Computer Controlled Power Strip | Instructables

Every new device you buy seems to come with its own charging brick and cable—which is good, until you have a drawer full of them in your office, or wind up having to pack a dozen charging cables, bricks, and wall adapters before you so much as go to the library with your laptop. Thankfully, most of them are interchangeable, and even if they're not, it's easy to trade a handful of cables for a single charger instead. Here's how.

Photo by Paul Downey.

Carry One Micro-USB to USB Charging Cable/Brick pair

If a device can charge over USB, almost any USB charging cable and any USB wall brick can support it. Your computer can charge these devices as well. If your devices—like most new gadgets these days—charges via micro-USB, grab one micro-USB to USB cable, ditch the brick entirely, and pack your laptop and laptop charger. Leave the bricks and additional cables behind, and that way you can charge your device off of a free USB port instead of plugging into the wall. If you're staying home, toss the extra bricks and cables into a box and stick with only as many cable/brick pairs as you need.

If you don't want to use a USB port just to charge (or you're like me and have a Macbook Pro with only 2 USB ports anyway) and want to bring your charging brick anyway, only bring one, and make sure it's the type that allows you to plug your micro-USB to USB cable into the brick itself. That way you can use the brick with any gadget that charges via USB, even if the connector on the other end isn't micro-USB. The only thing to keep in mind is that not all USB ports and connectors are made equal-if you're plugged into your computer or a wall brick, it shouldn't make a difference (although lower-power chargers may charge slower than higher-rated ones) but it's worth keeping an eye on especially if you plan to charge a higher-capacity device like a tablet.

Photo by Joe Hackman.

Upgrade the Brick for Something Better

Long before I started writing at Lifehacker, I was a commenter, and years ago our own Adam Pash suggested this Belkin Mini Surge Protector and USB Charger. It's available at Amazon here for $19. I bought one back then, and keep it in my bag at all times. The fact that the charger has two USB ports as well as three standard plugs means I can turn any single plug into enough plugs to charge and power all of my devices.

The beauty of the portable surge protector is that you can use it at home or on the go. It's small enough to fit in a bag, but it's small and stable enough to plug into an outlet at home for everyday use. Alternatively, commenter Mike Cerm suggests this 3 outlet surge proctector with 2USB ports from Monoprice for about $8 that does the same job, offers USB ports that charge faster than the Belkin model, and costs less. It looks good, and smaller to boot, but I can't say I've tried it myself.

Upgrade the Cable for Something Better

Instead of, or perhaps in addition to a brick like the Belkin one, a portable charging pack and array of tips for different devices can provide another charging option. The Enegizer XP1000K Power Kit can charge several different devices from its included rechargeable battery, or directly through the power kit while the battery charges. The kit is available at Amazon for $20, and a higher capacity model, the XP2000K, is also available for $37, and a higher capacity model, capable of charging laptops as well as tablets and smartphones is also available for $138.

All models come with an array of tips for charging different devices, and ultimately allow you to leave your myriad charging bricks and cables at home entirely, and as long as you have one outlet and only need to charge one device at a time, you won't need anything else. Admittedly, if you need to charge multiple devices at once or you want a quick charge, this may not be the best option for you, but if you have a single laptop, a digital camera, and a smartphone, you'll likely be okay.

Energizer obviously isn't the only company that makes these types of rechargeable power packs, but I have experience with these models and have found them reliable. Even if you don't want to ditch all of your chargers, you'll have no trouble ditching several of them for a power pack.

One of the easiest ways to declutter your home office or travel lightly is to get rid of the half-dozen charging cables and bricks that take up so much space in our bags and desk drawers. If you're tired of wrangling USB cables and charging bricks, pare down to the essentials, grab a portable surge protector, and stash a power pack in your bag. You'll never be without power, and you'll always have enough to go around.

Sometimes you just need to reboot or shut down right away-and we mean right away, with no waiting. Thankfully, whether your Mac is frozen and non-responsive or you just want to shut down and go home right now, there's a keyboard shortcut that gets the job done.

If you need to reboot and you don't feel like shutting down your apps one by one or waiting for Mac OS to walk you through them, press Ctrl+Cmd+Eject to reboot your Mac immediately, with no alerts or warning dialogs. If you need to shut down and run out the door, press Ctrl+Opt+Cmd+Eject to shut down immediately, also without alerts or warning dialogs. Be careful using these commands though: you won't be prompted to save your work or review your open apps first.

You can also press Ctrl+Eject (or press the power button) to bring up the power management menu and select whether you want to reboot, shut down, sleep, or do nothing. Before you use any of these commands though, remember you can always press Cmd+Opt+Shift+Esc to force-quit the front-most application if that's what's making you want to reboot. Photo by Michael Napoleon.

Shortcut of the Day highlights a great shortcut on various platforms from the desktop to mobile devices to the web. You can find more shortcuts here.