I wanted a dice tower that could print all in one piece, but which wasn't necessarily castle-themed. I liked the twisted designs I saw on here, but wanted to do something slightly different, so I cobbled this together with Tinkercad. The model is far from perfect, especially because of Tinkercad's inaccuracies, but it works well enough for 3D printing at lower resolutions.
As always, please feel free to remix and make it prettier. Share and share alike. :)
3D Solutech PLA
See Through Blue
I designed the tower with thin walls specifically so semitransparent filaments would work well, but that may cause issues depending on your printer. Supports are not needed as long as your printer can handle ~45° overhangs without too much issue.
You could probably get away with a much lower infill as well. The incline on the top of the ramps inside is 15° though, so unless your printer is ridiculously good at overhangs, you're going to need infill to support the ramps.