Again, a great salvage warehouse can be just the place to fulfill both needs. You can find salvaged items that might just need to be stripped and repainted, but have some craftsmanship. You can even find items like these faucet handles that can be reused or used as hooks in the kids bathroom.
Take a piece like the one above and transform it into a Mud Room sink with storage above. Pull the top shelving unit off, drop in the sink and faucet and maybe change the paint color. A little imagination with a salvaged piece can go a long way.