My list of tools for the techie. In order of preference.

  1. Drill/Screw Gun
  2. Jig/Sabre Saw
  3. Router
  4. Sander
  5. Circular Saw*

If you were to have just numbers 1 & 2, you would be well on your way to building just about any set you'd need to.

* Personally, I dislike circular saws. I have a couple of them, but I don't use them much for freehand work. Perhaps my dislike goes back to the Red Cross first aid training tape showing a construction worker being injured (fake for the tape) while using one. These things can buck back at you if the wood pinches. I've seen this happen a few times.