My boy's birthday present is done. He turns 4 next Friday, and I had previously worked a deal with my neighbor for a swing set. We built onto it today, and it came out great. I used all treated lumber, and I've had 1,000 pounds on the new level and it didn't move. Here's some before pictures, before we even moved it.
Then after we were done. New level, ladder\stairs, and reworked the rock wall. I have about $180 in it total:
Over the next few weeks we'll sand up the old wood we used, oil it up and stain\paint it. What do you guys think?