Tabletop height blocks
thingiverse
My D&D group wanted something like this. So I designed this and started printing it for myself.
Download Model from thingiverse
With this file you will be able to print Tabletop height blocks with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Tabletop height blocks.