Buy on Aliexpress

This small copper keychain ruler is one of those items that everyone should have at all times. Just think of the sheer number of times that you really needed to measure something, but you didn’t have the proper tools on you. Well, now that problem is solved, because this small thing will tie perfectly to your existent keychain gadgets. Of course, you could tattoo a ruler to your finger, but buying this is a much more convenient variant. It also looks really nice in this copper color.