Build your own effects clone.
I know there are a bunch of you out there that want to build their own effects pedals. I am ordering the Ping Pong delay kit from BuildYourOwnClone.com. At $100 it is more expensive than the cheap delays coming out of China, but more advanced than some of the more expensive delays available at your corner music store.
Check out the YouTube of their tremolo kit. Tremolo is something that works for surf and early rock, but never seems to fit with blues. I love the demo, though.