We hear about legacy glass, why not legacy flash? Got this OM series T20 flashunit today ($10 including postage!) from an online auction. What a sweetie in very good condition for a 30 year old - human or otherwise! Fits nicely on top, takes two AA batteries and offers thyristor flash-based auto sensing to 5 metres @ f5.6 with 200 ISO. And came with original olympus leatherette pouch as well.