Some of the older members may recall I've trained past rabbits to do all sorts, from basics like coming when called to agility/jumping and even playing basketball with a mini hoop. I've tried using a clicker but I don't think it helps at all, if you give them the reward straight after doing what you want them to then they'll associate the trick or whatever with food (trick = food), so as long as you give them their treat swiftly there's absolutely no need to use a clicker device (trick = click = food). If you're not very mobile and it's going to take you a few seconds to reach down and give them their treat then it might be useful, although you could just use a verbal cue.
PS If any of you are unfamiliar with Bini the Bunny search for some videos, it's where I got the basketball idea from, he's one smart little bunny
