I guess I would base this on what I use the most. Speed squares, framing square, scribe, tape or rule, straight edge/level, hammer and punch, wrap around or plastic or metal banding for marking round stuff or laying out curves. there is no such thing as to many clamps or vise grips. magnets, enough grinders to not have to change wheels at every change in operation, a good vice, not expensive good, mine is a cheap 6 inch and has been beat on for 25 years and wont die. as Chase said, a good hood that I can see clearly through and good quality consumables, they pay for themselves in the long run, a table big enough for the task at hand or enough stands to compensate. a drill of some kind and a good supply of bits, preferably champions.