For starters, portable power supplies. Betavoltaic batteries as a start. Since there's no chance I'm getting my hands on dilithium anytime soon, they'll do. The locals don't seem to have a source of energy that's portable quite the same way.

[Out they go, heading towards a place Geordi's marked on his pamphlet map of the city. It's in a different area, but not one that they'll struggle to get into, or that'll require more than a long walk.]

I mostly need raw materials, since I have my tool kit on me. Between that and my tricorder, I'm pretty sure I can make some stuff that'll work when we leave this planet. Electric lights, at least.