We are planning on doing this! Check out our prototype robot playlist for our idea. See the "Pneumatic Piston" or "Hanging Idea" to see what we thought up.
That was really good for just a prototype robot! Was that pneumatic cylinder the kind that just goes all the way in or out; or was it the kind that could stop at any point you wanted it to? It looked strange to me the way it went up just a little bit then stopped... Or was it just out of air?