craftgrrl | Where do I get magnets?

Okay. I've been looking into making the marble magnets for my friends for upcoming birthdays and etc. I understand how to make them, and I have all of my supplies except for the magnets.

I was wondering, for those of you who have made these little things, where do you get your magnets from?
I'm going to be looking for 1/2" Circle Magnets.

Thank you to anyone who may have a suggestion. I just didn't want to go out running all over with these silly gas prices today just to be let down when places didn't have what I needed.

(Also posted in marble_madness)