A couple of months ago, I found this in a tray of winter-dormant plants:
Dead? Not quite. See that bit of leaf in the lower left? I found a few of those, so I tucked them (with about an inch of stem) on a bed where I was rooting Episcia stolons. After a few weeks, they looked like they were growing so I pulled them up, trimmed off dead material, and potted them up. A few weeks later:
Hopefully this time around I won't almost-kill them again.