Just look at all the tools that this thin, minimal wallet has integrated into its surface: bottle opener, nested wrench, ruler, bit holder, box opener, and even a smartphone/tablet stand. If you don’t mind the metal aspect for the wallet function, you could have all these tools sandwiching your cash and cards, at the ready for whenever you might need them. Sure, it’s a little clunky, but it is metal, after all. See video below for more.
Available from Kickstarter, 40.00 or more.