From Evil Mad Scientist Wiki
Many types of objects can be put in the Eggbot and plotted on. In choosing an object, a number of questions come into play:
- Size - How does it fit and what adjustments do you need to make to the Eggbot to draw on it?
- Surface - What are you plotting on? Eggs, glass, ping-pong balls, etc. all have very different surface textures and ink absorption.
- Expense - Are you doing ultra-fine, archiveable work or rapid-fire demo's?
 Types of objects
- Chicken eggs - the default standard. Inexpensive, absorbs ink well. Also fragile. Tips on Blowing Eggs.
- Duck eggs - bigger than chicken eggs, and narrower proportionally.
- Christmas ornaments
- Ping pong balls
- "Ball pen" balls
- Golf balls
- Lacrosse balls
- Plastic eggs
- Wooden balls/eggs
- ceramic eggs from Hobby Lobby
- Acrylic Spheres from CorSec Engineering[dead link] - marketed as planet kits but fit in an Egg-bot and comes with a stand
- Decorative glass balls, for example the 4" spheres from CB2
- Wine glasses - some wine glasses (generally with relatively short stems) can fit with the tailstock all the way back. You can use a disc or jar lid to hold the open end of the wine glass. Tape it to the wine glass or use a rubber gasket to hold it in place. The stemless Reidel "O" tumblers are likely a good choice as well.