Well, since the OP spoke about building a set of shelves, I'd want a router, edge guide and bits for same, perhaps a router table, bar clamps, a 1/4 pad or round RO sander for paint work, or a straight line finishing sander for stain work. Toss in a cordless drill with spare battery and various bits, including a taper set with counterbore and depth stops, good chisels, a dead-blow soft-face mallet, and a shop refrigerator with beer.
