Waterproof (maybe needs an o-ring) container for bills and coins.
The long one cat fit coins and bills (2mm thickness)
The big can fit 27mm coins. (3mm thickness)
The small one can fit one folded and rolled bill. Special for emergency cash in the keychain.
Designed to be easilly printable without support.
There's an openscad source with some parameters.
One parameter is the maximum unsupported angle (0=vertical, 90=horizontal) the printer can make.
Both the cups and the screw threads honors this angle.
The only need for bridging is the cord hole but any printer can print that small bridges.
You can also customize the cavity dimensions, thickness and cord diameter.
The cap will have double top thickness unless cord diameter equals to 0.
Could need some force and patience to screw the first time if printed in 0.3.
Screws smoothly in 0.15
Includes Dan Kirshner thread library for the screw.
The included STL have no angles beyond 40°