An easy bug robot to teach kids how circuits work.
-Used a broken propeller to make a quick vibration motor. -Used metal zip ties to make the battery contacts and switch (no sharp edges) -Batt and Motor are just attached with double-sided tape -Paper clips for the legs (pictures look a little messy because I was experimenting with hot glue for different leg materials.)

The cap is meant to be a tight fit.

You can see it in action here: https://youtu.be/8IUXjVha2_c