This is a small threaded jar with a loop for attaching it to a keychain. The interior volume is roughly 0.975" diameter by 1" deep. The purpose of this exact volume was so that if I fill it with any combination of normal American coinage, I am incapable of having less than 50 cents for a soda at the corner store. :D

This model was an exercise in printed threads, but I liked it enough to upload it. 

I printed it oriented per the screenshot at 0.12mm layer height and that seemed to barely be enough for the steep three point threads. If you want to try one at 0.2mm we can find out what happens together! (: