This big backyard fort is perfectly named the Mighty T-Rex Cave and was scored by an awesome grandpa keeping his eyes out for his grandkids!
This fort has a PVC frame (which is an easy way to create structure while still being able to take it apart!)
An entire room fort from Life's a picNIC for 5
You can check out their fort kit over at teehee4two
Love that this bed comes with a fitted "top" for forts from Ridder & Clown
And I love this prototype treehouse bed from Aalto + Aalto