A Grab Bag is a bi-annual TFINO event where the members sign up to do a blind swap of toys and other random goodies with other members. Participation is voluntary. Members are encouraged to put not only Transformer-related items in their Grab Bag, but anything else that the sender finds amusing or interesting.
Though be warned, DN lives really far from a post office or something. And if you live in Indochina or wherever that is That One Guy calls home, too bad...the customs hellhole is too much of a hassle. And solfire is a douche.