Barna Mug
thingiverse
They came up with a one-of-a-kind mug designed specifically with Barnacules in mind.
Download Model from thingiverse
With this file you will be able to print Barna Mug 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 Barna Mug.