To make one is easy: 4 wooden pallets attached to each other by large hinges, bought in any DIY store. Nail these together. Cover with old carpet.
A good alternative is a large square incinerator, the type that look a bit like a cage. Line this with tough plastic, and cover with carpet.
(hide) If you want to find an opponent with similar playing skills to your own look in the Ratings page of the type of game you want and find a player with a similar BKR. (pauloaguia) (show all tips)