Just a Small Cube
thingiverse
Some of the first things I printed was 3 small cubes, of course for a test as I was only using the filament that came with my printer but I usually do this to test my printers.
Download Model from thingiverse
With this file you will be able to print Just a Small Cube 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 Just a Small Cube.