What do you think Chewy carries around in his purse? Or is that a Satchel liking Indiana Jones carries?
I was going to say ammo, but then i remembered he has the ammo belt....., which he actually never see him use.
Well I always assumed his satchel thing holds extra smaller ammo energy packs and maybe a lockpick of some kind. Thing is, Jabba's gammorean guards never bothered to take Chewbacca's bandolier off before putting him in the dungeon cell
It's a camera so he can catch Han in some incriminating situation and finally get out of the life debt.
What bothers me is that noone in Jabba's palace even bothered to take off Chewbacca's bandolier and satchel.