As a dad and a budding traceur let me throw out one more idea for you. Try showing your parents, and maybe getting them to try a few things out. A playground has a lot of possibilities, the ground is usually safe, and your parents look like they're just playing with you (most adults need an excuse to play it seems, and being a good, involved parent is a pretty good one). Jumping into a cat on a set of narrow-gap safety rails is satisfyingly exotic, safe, and relatively easy. I don't know your parents, and the odds of them taking up parkour as a hobby might be low, but if you have an oppertunity some time, show them what you're doing, how safe it is, and what a good workout/confidence builder it is for you. Good luck, and good training!
