My guess is that a lot of folks do not actually use the useless touchpads on their laptops (even when traveling or when working in front of the TV) and instead rely on an external mouse, which necessitates either a larger desk (e.g. see the Levenger Lap Desk) or a non-existent slide-out mouse pad. And 99.9% of the mobile lap top desks I’ve looked at have all kinds of features except one: a slide-out mouse pad. But I finally bumbled onto this Rocketfish model sold exclusively at BestBuy for $39.99. It not only has a slide-out mouse pad, but also accommodates a cup of Joe (Kahlua not included). Unfortunately in my area they are all sold out, so I can’t actually give it a try.