Ask any superhero who isn't fortunate enough to have a built-in flying ability whether they prefer jetpacks or rocket boots, and they'll always say rocket boots.* Why? Because rocket boots let you do tricks. We might not have proper rocket boots yet, but these water-powered ones are the next best thing. And they're even affordable.

We all want jetpacks, but the only way they'll ever be affordable is if they're good for something besides being a plot device for James Bond movies. Martin Aircraft, the guys who have one of the few commercially available jetpacks in existence, have some thoughts about why these things might actually make sense.

How do you test a jetpack and make sure it's safe? If you're the makers of the Martin Jetpack, you strap in a dummy and set up the jetpack to work via remote control.