As I've used my CX7 for the last 8 months, I've noticed that my desk top gets quite warm, especially under the front edge of the notebook. I've felt that the engineers who designed the CX7 probably feel any heat generated is acceptable, but I wanted a little reassurance.
All along I mostly wanted to raise it up some so more air could get underneath it, but I haven't seen any non-fan coolers that were the right size that I liked for the $$. Last week I found a Chefmate black-coated cookie cooling rack in Target that is almost the perfect size (15 7/8 X 10). I figured for $4.99 it was worth a try.
Being metal, it helps transfer rather than insulate heat. Being open, it allows plenty of air to move. Being raised, it gives another 1/2" off the desk top. Being matte black, it does not look so much like I pulled it out of the kitchen cabinet.
And as a bonus, it's non-stick!
I want to rubberise the feety things, so I bought some plasti-dip rubber coating from Home Depot for $5.99, more than the rack. So I'm looking around the house to see what else needs a black rubber coating!