I tried out the CushionSpeaker from Philips, which is supposed to make things more comfortable resting your laptop on your knee. Being a huge fan of watching iPlayer in bed (at any time of day or night, to be honest) and a sufferer of the dreaded Hot Knee Syndrome, I quite liked it, actually. The integrated speakers also give your audio a boost, and it’s pretty comfortable. At £60 it’s not cheap, but a nice treat for obsessive laptop users.
See the Philips site for more.