I assembled my entry in about two days using a pile of old pallets. No nails or screws were used in the construction of the actual fort. Instead the pallets were lashed together with hundreds of feet of twine. The entire structure is surprisingly sturdy, even up on the third level.
Unfortunately, this is only temporary. As much as I’d like to keep/live in it, I’ll need the wood and space for an upcoming project. Check out the site to see the other entries, all of which are amazing. I was really impressed with the quality and volume of submissions.
Update: I won the grand prize! Check out the postings below, and special thanks to Jeff over at Boooooom for putting together such an awesome contest.