So you say you don't want to spend $40 on FFG's playmat? DONT! Spend $10 on a board and go buy two Ships to put on it!
I bring you the Ghetto X-Wing Board....


!. Go to Wal-Mart and buy a 48"x36" project display board.
2. Get it home and measure/tape off 6" on each folding edge.
3. Start blowing stuff up for fun and profit!
Folds for easy storage.
Disposable (cheap and replacable)
Easy to mass produce for large tournaments
Good for tables that cannot support 3x3 mats. (like my dining room table here)