I've printed some prototypes and the results were good, at my son like them... I've been tweaking it get a better fit on the threads and shelling out some of the bodies to reduce the filament required.

In v3 I extended the green jar into the bottom. I made the cross a separate piece since masking off and painting was more work than gluing in an insert. I shrunk the threads a bit as the version I printed was very snug and the goal was for my son to use it as a container. I shelled out the top a lot to cut out about 15 grams.

I did not print a version with a lid, so not sure how that fits yet, I'm waiting on for some silver filament.