Need business card-size envelopes... seen any?

I need really small envelopes, like business card size, for our std magnets to attach to our eparty favors. i went to staples but the smallest white size they had was the 6 1/2..... and then they had coin envlopes which would have been perfect size but they were that yellow manilla color which I don't really want to use.

Any ideas where I should check for white ones? would craft stores have envelopes? party city?

Paper Presentation has them!


Paper Direct has them also!