My son was asked to make a musical instrument as a science project, and we decided to try to construct a flute using Mark Shepard’s plans:
http://www.markshep.com/flute/Pipe.html
It probably took less time to lay out and make the instrument than it did to go over to the local Home Depot and find the parts, and the result is a neat looking and playable flute in G. It still needs some finish work (smoothing out the tone holes), but it’s well enough in tune to play on its own, even though I was missing a few of the right drill bits and so fudged the measurements a little.
If you’ve got an hour or so to spare, this is a good way to get an instrument for use around the house for not much out of pocket. Anyone tried his bass flute plans?