Doodle Bots

This is a 3D printable version of the classic doodle bot.

The parts are designed to fit a cheap toy fan:

http://www.amazon.com/Disney-Frozen-Light-up-Candy-Elsa/dp/B00LVJXFMY/ref=sr_1_1?ie=UTF8&qid=1458840850&sr=8-1&keywords=toy+fan+with+candy

(You can find them for $2.50/ea at most Wal-Mart store checkout lanes with the toys and candy)

To make the bot move around, you need to imbalance the fan. I glued a dime to the back of one of the fan blades and trimmed the blades down to the size of the dime so they'd spin inside the body without hitting the inside. (See Picture)

The body is a plastic cup:

http://www.walmart.com/ip/Great-Value-16-Oz-Clear-Cups-50ct/16935793

The marker holder is made to snap fit onto the lip of the cup. It is compatible with any markers with a 10mm barrel. I used Crayola Super Tips:

http://www.walmart.com/ip/Crayola-Washable-Super-Tips-Fine-Line-Markers-Assorted-Ink-50-Pouch/49995950

You need to cut a hole in the top for the head to sc