Built a Moonboard in the garage. This is how I did it.

Freestanding Climbing Wall Videos:
   • How to Make a Free Standing Climbing ...  
   • Building a Freestanding Climbing Wall  
   • Building an Adjustable Home Climbing ...  

Mini Moonboard:
https://moonclimbing.com/mini-moonboa...

Cost Breakdown:
2016 Hold set with bolts and t-nuts from Moon Climbing + shipping to the US: $1,121.87
Lumber, plywood, and screws from Home Depot: ~ $250
Cheapest Miter saw I could find: ~ $120
Drill Guide: ~ $40
4-pack of clamps: ~ $20
Total Cost: ~ $1500, more if you build it outside