I had a lot of fun with the playmate project but this is the end, I promise.
I left the animals out to play all week, waiting to see if Clovis would find one in particular he liked. He actually got to the point where he was laying amidst them all rather than all by himself in his regular spot under the Foosball table, and he did briefly play with one of the little monkeys. I'm pretty sure the motivation to find more food hidden somewhere in the menagerie helped to keep him interested. In the end though, these were meaningless objects and no connections were made.
When I first got Clovis one of my daughter's friends asked me if I would get another rabbit for him so he could have a playmate and my answer was, "No, because I am his playmate."
Maybe that's why he didn't choose one. He already has me.