We've blogged about some great copper pipe candles before, but there are plenty of other great uses for copper pipe. Not only is copper naturally antibacterial, it's recyclable, easy to cut, fun to work with, comes in a variety of sizes with every connector imaginable, and maintains its value...
AT's blogged before about this great copper pot rack pictured above, but there are even ideas beyond that, limited only by your imagination.
It's easy to work with: There are an abundance of fittings from tee's, L's, etc. that are easy to connect. There are screw fittings and push-fit fittings which require no solder for decorative applications. For cost savings, however, we recommend learning to sweat a pipe which enables you to use the less expensive traditional fittings.
The environment: It's naturally antibacterial, will last for at least a hundred years, is fully recyclable and is a natural metal. If you get tired of your pot rack, you could always sell it to be melted back down into copper.
Here's a budget pot rack, made for under $10:
Here are a couple resources at ThisOldHouse.com:
Top Photo: Gemma Comas for This Old House