Summer break !?!

School is almost out! My children will be out on Friday. I have mixed feelings about this. Getting up at 6:30 to get the kids ready to be on the bus at 7:25 is getting old, and so is making sure that homework is done, papers are finished, projects are done. Vacation and time with family is fun, but I'm dreading the I'M BORED! that starts about a week into summer break. We've planted a garden and I think the kids are excited about it and we've signed up the son to play t-ball. We're not planning any major "trips" this summer. I'll probably put the kids into swimming lessons, but I need more ideas! What do you do with your kids over summer to keep the I'm BORED's to a minimum?