I feel lucky that I or anyone else on our team hasnt gotten stolen from (except for a few bucks i left out in our hotel for regionals that the cleaners might have thought was a tip

) A thief doesnt belong in robotics club. period.
Just like paintballing, equipment is expensive, and it is often necessary for teams to bend over backwards to raise enough money just for one regional.
Oh, and this may sound wrong, but at least the people stole from the club and NOT individuals (this way the school could take legal action blah blah blah)