Safe and Cool: A Sunken Trampoline For Kids
DIY Inground Trampoline!!! These are so much fun and look way better than regular trampolines!!
This might be one of the smarter ideas I've seen for a kid-friendly backyard.
Trampoline Pool!! This is going in my dream house!
Sunken Trampoline with cover and a link with tips from an installation company.
How to make an underground trampoline that's safe and easy to craft http://www.craftlikethis.com/make-underground-trampoline/
DIY underground trampoline - cheap! Good instructions
This is a must do for my kids