Maybe your wives / girlfriends don't share my opinion, but I believe tools are NEVER ever a bad investment. If you needed it once, chances are good you'll need it again in the future. One of my personal favorites I couldn't live without is my Dremel.
Keith hit the nail on the head when he mentioned that organization is key to a good tool box. If you can't find it, you can't use it. Though Billy has a couple large roller boxes for his mechanic's tools, I prefer the quick access of pegboard mounted to the end of my work bench. I keep my trim restoration tools (mostly homemade) in a separate box in one of the cubby holes but most of what I use all the time hangs right there next to me within easy reach. It's a lot fuller now than when this pic was taken, but you get the idea.
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