I disagree. You can pour your own sugar motor in nearly any impulse you desire. Granted technically it's not simple, but the materials required are easily obtained.

Here's some good reading on the subject. http://www.aeroconsystems.com/motors/sugar_motor/sugar_motor...

As for the rest of the rocket, I don't think the materials could get more generic. Fiberglass, carbon fiber, metal, and phenolic are all easily obtained.