Tessa was looking at my Gift Certificate Tutorial and asked me where to find coin envelopes. You can buy them in any office supply store.
In the store you'll find them in one of two places. First check on the aisle with all of the other envelopes. If they're not there, go look on the aisle with all of the money/financial items--cash register tape, coin rolls...that type of stuff. That's where I found mine in Office Max.
Here's a picture of my box of envelopes so you know what you're looking for.
When I bought mine a couple of years ago I could only find a box of 500. Since then I have seen smaller boxes at Staples. So give them a try first.
