Honchey, try a mailing label, you might want to add your board name too... although I usually have to add mine because I forget!
I use the ones that might not be good enough to use on the envelope because they did not print real exact! AND... if you plan on doing more, I cut my scraps into sq's as I go along and put them into baggies as soon as I am done cutting them, with a slip of paper and how many are in the baggie, makes it a lot easier and one step ahead of the next Swap.
Marybeth