Save space in your wallet & organize all your gift & store rebate cards by putting a hole punch through them and adding them to a key ring. There are also "frequent user" card wallets available if the key ring is too much.
The best DIY projects & DIY ideas and tutorials: sewing, paper craft, DIY. Ideas About DIY Life Hacks & Crafts 2017 / 2018 Why are people so much smarter than me. This seems like the dumbest smartest thing of all time.