Fun SUMMER job ideas?

I need a new job just for the summer before I go to school in the fall. The thing is, I'm not exactly qualified to do anything, but I have a great work ethic, I'm a fast learner and I can do anything that I set my mind to. I just need some ideas of what to look for, so here's a bit about me:

I worked at a daycare for 2 years and just completed 1 year at an aquarium (guest services). I don't mind working with kids but I've "been there/done that". I want something that will give me experience as well as something that I enjoy. I'm not limited to a specific location (I can fly anywhere if I need to). I like the outdoors and I love to travel. The types of jobs that I have been looking into include: cruise ship jobs(retail,pianist,bartender,etc), national park jobs(tour guide,info center), and more.

Remember, they must be SEASONAL, ENJOYABLE, and INTERESTING. Thanks!