Moo.com is by far my favorite, but they're kind of expensive.

Meanwhile Vistaprint offers coupons and deals all over the place.

How do you usually promote your coupons when you offer them?

Thanks for the info!

I think Square is the best bet (www.squareup.com).  I see them all over the Bay Area - at coffee shops, craft fairs, etc.  And I think they charge a small fixed fee, instead of the high variable fees that the other card readers charge.

I know you can buy fairly sturdy 6' long folding tables at Target for $20.  Most of these cheap tables are hideous though, so you'll want to drape something over them.