I just bought this house and my wife, and I wanted to demolish this half wall cause it was an add on. After looking around on what to do with it, I told her lets pallet the wall, so I looked around for ideas. I got about 20 pallets and sanded them down and used a reciprocating saw to cut the boards off. Sanding them and cutting them took the longest. Then we bought some stain and stapled them to the wall so overall it took probably about five days of sanding all the pallets. Then staining and putting them on the wall took two days. It's the cheapest project. I spent $30 for the stain $10 for the sanding pads and $12 for the staples.
Read Pallet Half Wall by Neokentin on 1001 Pallets!