Well I have two possible CR things. The first is Karen here (an AU of Kara), who's 28, and works at the university in the bio lab. She...could probably help supply him with some supplies for his back-alley work. She has a soft spot for anyone that can't afford to pay and would generally be cool with helping that.

Also Penelope mincingminuet is prooobably a frequent customer. Mapo tofu is a favorite food.