If you want 2x3 (nominal 6x9), an Adapt-A-Roll 620 will do. I use 'em, with careful loading get 9 shots/roll.

AAR 620s will feed film from a 120 spool, must take up on a 620. Since 620 spools are scarce, I respool exposed film back to the feed spool before sending it to the lab. That's what changing bags are for.

They'll also do 10 nominal 6x7 shots/roll, BUT when shooting 6x7 the gate is off-center so using one that way will require careful marking of the GG.