Jesse's been working on the supplies to build their own tidy little meth lab somewhere here; they've got the glassware and some of the chemicals, they just need the rest of their precursor, I think, along with a couple other supplies.

Should they need his help for anything, should Walter not be well enough to cook, hell, if Walter doesn't even want to cook while his brother-in-law's here, Jesse's gonna need another partner, so there's that possibility. I'll definitely hit you up for something! Sherlock Holmes is a pretty freaking good ally to have.