Quoted from Luckydogg420:Graph paper. Cut out tiny rectangles that are scale size of the games foot print. Make a scale size box for the room. You can rearrange things quickly until you get it right.
Graph paper is easy to get a scaled down model. 1 block = 1 foot.
I've done this and it's embarrassing to let anyone see it.... Total geekdom project. Works like a charm though and you never are 'done' - you are always rejiggering things in the layout so having the quick ability to move a piece of paper works great.