This is the inflatable I use:
http://www.amazon.com/Smart-Air-Beds...9057068&sr=1-3
Queen-sized foldout with the couch armrests for gripping. I also saw a queen inflatable mattress at Sam's for $60 that has microfiber on one side and plain on the other.
You know those king bed mattress covers used for storage? I think they would be large enough to tuck nicely over a bed.
And I've got goo. There was a hickup in the reorder, but we are good to go now.