Hmm...maybe we should handle them how we handle the "pack-in" items that come with the Masterpiece figures (tiny "Reflector", Grimlock throne, etc.), treating them as their own products? As for exclusivity, just indicate the "major" retailers that these were known to come from - Laserbird from Toy Dojo, Uncle Billy, etc. and Bat Soldier from Toy Dojo and maybe a note in the comments section stating which extra came with whatever main figure.
With this kind of stuff, I don't think there's an exact science as to how effectively list them. It's either this or create a bunch of different listings with any and all possible combinations of the extra goodies that could be packed in with these guys, and that's where you enter "Decoy w/ Throttlebot, Mini-Spy w/ Mini-Car/Bot territory". Well, not nearly as bad...but still.
MIKE
engledogg