Tree
thingiverse
I decided to create a tree model for a school assignment and couldn't locate any suitable options, so I came up with this design instead. Although it doesn't meet my personal standards, it produces clear printouts.
Download Model from thingiverse
With this file you will be able to print Tree 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 Tree.