Pirate Party Invitations

We normally have a playgroup with our friends at a local park. We let the kids run around and have fun. But it's so hot right now, that we have to go where there's water. I decided to host a water playgroup in our backyard this week. And of course, if I'm going to do anything there must be a theme involved. So here are the invitations:

I printed the invitations I designed on regular 8.5x11" printer paper, then stained them and burned the edges and rolled them in clean glass bottles for a "message in a bottle".