In situations where you don't have a dedicated "car" area, I think the most important thing to have is a small tool box, so you can put things away, out of sight of the wife, and out of the little kiddies inquiring hands. The best way to really get in trouble is to have one of the kids wandering around with a sharp x-acto.

The next thing is a shelf or shelf unit that you can put up high enough to be "out of the way". As far as the tools themselves a good philips that fits the Japanese philips heads. and a pair of needle nose pliers. A small soldering iron. Then just add stuff as you use them. If you want to know what sets of wrenches etc, I wouldn't know cause my stuff is just a hodge podge of different stuff, some of it the best money can buy and some of it from Harbor Tools or Home depot.