I would suggest a Dremel or any other rotary tool with a flexible extension, a respirator, spray booth, and a pack of brass rods of different diameters and 17 Gauge Spool Aluminum Wire for pinning. Those are just items off the top of my head I use for every kit that I don't see.
https://www.amazon.com/gp/product/B000FPCDRS/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1