Kids out of school for the summer

TaraJon, Sladyn and Ronan are out of school for the summer and driving us nuts. I suppose all parents have the same problem that we are having with trying to keep them entertained. They want to go go go everyday but with John and I both working that is not possible. They have so much energy when they don’t get out they make us crazy by the end of the day. Unfortunately there are not a lot of summer activities in Costa Rica for kids. Since Costa Rican kids are still in school, there are no camps that we can send them to. They don’t really do that here so it’s up to the parents to come up with activities to keep them occupied…this is going to be a long summer. Fortunately for the parents, they are only out for 2 months since they get a month off in December/January. Any suggestions on what to do with them would be appreciated. I’ve run out of ideas.