I wouldn't want to FMQ without my gloves (machingers) and my home-made glider. There are quite a few links on the board regarding the supreme glider. Like newbee3, I purchased a non-stick oven liner for my oven from Walmart. I then taped some of that foam cupboard liner to the bottom (I might not have even needed to do that, but it keeps the liner from sliding around on my table). I cut out a hole for my needle. Voila! Bigger than the Supreme Glider (and ALOT cheaper).
Other than that I have my FMQ foot (mine happens to be plastic and closed I believe). And practice sandwich quilts. I always start off practicing a little before I begin my project.