Many of the other hobbies represented on here do require the use of tools, so why not get some discounts on various hand tools like decent torque wrenches, laser measuring devices, and electronic meters and testers, eneloop batteries, battery chargers, etc. The tool sets from iFixit seem to sell well. High end Soldering irons ( I would love a discounted Hakko FX888D) antistatic mats with wrist straps, specialty automotive tools, and many others that I am sure I am missing. Some of these show up in other places, but why not consolidate them and expand on the choices? They could even include how-to books, reference books, and project books and videos, online courses at a discount.