[IKE]

This is a great idea.

I would also bring a Hacksaw &/or Bandsaw and some files. There are usually a couple pieces of the chassis that could be cut down to size.

If you are planning on having fully mobile units at the end of the day, a representative piece of carpet would be good to show the difference. Lots of teams seem to do a lot of testing on tile and then are shocked when their bot won't turn on carpet. a 10' x 10' piece should work well.