Interlocked Cubes
thingiverse
I recommend printing this with a brim so it doesn't get knocked over during the print. If you have really good bed adhesion it should be possible to print it without a brim.
Download Model from thingiverse
With this file you will be able to print Interlocked Cubes 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 Interlocked Cubes.