Anker USB Adapter Keychain Holder

I've lost more of these Anker USB A → C converters than I'm happy to admit! They're slippery and none of the options I've seen have the elegance of a simple carrier. 

This model “just fits” when printed with PLA+ on my printer, you may need to scale the model up or down by a few % to make it work with yours. Now I know that I'm less likely to lose the adapter. 

I've also added a model with a slightly larger keychain hole.