The merits of smartphone cases are a subject of debate, but if you do use one, consider storing an emergency $20 bill between the cover and the phone.
As Reddit user Lunkavitch points out, the money could come in handy to pay a cab or lunch bill if your wallet gets stolen, or if you just forgot it at home. It may seem a little paranoid, but it's a small insurance policy that could get you out of a jam if your wallet goes missing.
LPT: Keep a $20 bill between your phone and its case. You'll have some cash if you lose your wallet | Reddit
Projectors can be expensive, but if you're looking to build one for your smartphone without spending a lot of cash, Instructables user iamaledgend put one together for under a dollar.
Keeping your recipes organized can be a daunting task, especially if you have hand-me-down index cards passed down by family or scrawled out by friends scrawled out on slips of paper. Last week, we asked you 
When you need a place to collect and organize all of your family's old recipes in digital form, and then take those recipes with you to the grocery store or to your parents' house to help with Thanksgiving dinner, which application do you use to get the job done? This week we want to know which apps you have loaded up on your smartphone or tablet to collect, organize, share, or just store your favorite recipes for safe keeping. 
