Could it possibly be a Cotyledon?

It could, but I haven't been able to find something close...

Looks like one of those confusing Crassula platyphylla beasties! This looks like the red one I had that I accidentally killed..

Beth, that's what I was thinking too, but can't find pics that would convince me. I believe similar plants were posted here before, and most suggested C. platyphylla. Here is one of the posts, Erica posted photo of variegated C. platyphylla (my plant is not), and the stems and leaf shape & growth pattern is very similar -see here-

I wonder how her plant is doing, and others pictured in that thread too.

First eye says Crassula