I am in the middle of building a trials course, I have collected 35 pallets, a 20ft long telegraph pole and some over wooden things I found in the basement.
I am hopfully going to get lots more pallets, railway sleapers, wooden moulds, cable reels, fence posts etc etc.
I am gonna be having them in my field which is on a slope, so its gonna take ages to get it all sorted out, but then I will have uphill and downhill runups at things which is good practise.