Hello, I have a laptop tray with beanbag (styrofoam pellet) undercarriage which I used effectively for 7 years with my 12 inch screen iBook. I can't sit at a desk for long without backache setting in. Sitting in a recliner with the iBook on the tray was just the ticket. I'm about to upgrade to the 15 inch (possibly 17 inch) MBP. My current laptop tray is too "tight" for the 15 inch and far too small for the 17 inch. So, I'm seeking tray recommendations for the 15 and/or 17 MBP. Any ideas? ===== For those looking for a tray for their iBook or MB Air, I can strongly recommend the tray I've beeen using... It's produced by a Scottish company called "Margot Steel" ... Google it. A caveat... Never put a laptop on a tray without sandwiching some tacky rubberized matting between the two to prevent slippage.