If you don't have a wall big enough (one that you can use)
I have often asked my local church (they have large tables) if I could possible use them when it's convenient. Push about 4 of them together and you would have a big enough size for a king. Usually I have just stood and pind basted them but now I'm seriously thinking of useing spray basteing, just cover the floor under the table with newspaper or a painters tarp. Will have to give that a try!
So many new things to try!LOL