I love being on Christmas break (I'm a teacher), I've gotten more wedding stuff done this week than I have in 3 months lol!
This was very easy to do, and pretty cheap! Ordered the two sides from Vistaprint with a Groupon and double stick taped them together.
On the back is a thank you message and at the bottom is says "We hope it's not too hot outside, but you look amazing...seriously. Here's a fan in case you might need it." (It's an outdoor ceremony in June in Phoenix).