I got my Christmas present early (against my husband's desires). I bought a set of Kenko extension tubes. I've wanted true macro abilities, but without the price tag. This is a pretty good option. I used all three tubes stacked on my 50mm lens and focused about half an inch from the objects. That is one of the drawbacks, I guess. But, I don't know the normal focus distance for macro stuff...so maybe this is OK.
Any how, here are my first attempts.