An elegant castle with an intriguingly hanging spiral slide, allowing you to enjoy rolling your coins down for convenient storage below by simply dropping them in the tower.

This has been designed to simply be print-in-place, with no supports or brim.  Note that smaller layer heights will work better for the slide portion of the model though (I used a .12 mm layer height for the version shown in the pictures, but it should also be printable at a .2 mm layer height with proper cooling and a reasonable print speed.)  

Update:

A cover piece has now been added to this model which is designed to simply drop-in and provide a way to hide the coins in the bottom chamber if desired.  The default version includes a handle in the center for convenient opening, and a version without the handle is also included.