I don't know why I never thought of this before, and I'm curious if others have used this. It would be relatively straightforward for an alchemist in RM2 to make a Ring of Familiar - it's just a 1st level spell, so Daily 1 would cover it. The wearer could then use it for the requisite 7 days, and sell it to someone else.
What am I missing? Would this actually bond the familiar to the maker of the ring? (That seems possible, but a GM call) Or is one Ring of Familiar going to lead to everyone in the village having a familiar?