Combine futuristic-looking jetpacks with an open body of water, and you've got hydroflying—the sport that lets you soar up to 40 feet in the air. Adventurers slap on a life vest, a helmet, and a jetpack, and after a quick lesson from a hydroflight pro, they're ready to take off. First-time flyers can expect to hover around 10 to 20 feet in the air, and if they get tired, the floating hydroflight board lets them simply lie on the surface of the water—no swimming required.

Hydroflight sessions are available for kids as young as 13, and iFly H20 even offers birthday-party packages for younger kids who get to watch a hydroflight athlete strut his stuff before they play water-themed team activities.