I know it has been a few months since posting anything, but the Winter was a time to take a break and reflect. Now we are back and planning again and with that is more Craigslist searching. We found another good buy, 20 2x4s (untreated) and 4 4x8 sheets of plywood.
The 2x4s will work great for the wall framing. The plywood will work great for the flooring inside the treehouse. I was thinking of doing decking throughout out the platform, but I cannot pass up an opportunity like this.
It was $15 for all of this. It's like a broke dick: you can't beat it.