I use a gaming tray on my couch. I like that the height can be easily adjusted and the tray itself can be tilted for personal comfort. It connects to a USB connector that drives a silent fan in the compartment that cools my laptop (it plugs directly into my laptop's USB port). I am very happy with this tray!
Natural Winsome Baldwin Bed Tray
11 Review
AMERIERGO Lap Desk - Optimal Comfort for Laptops Up to 17 Inches
11 Review
Adjustable Bamboo Laptop Desk Tray with Tilting Top Drawer for Surfing, Reading, Writing, and Eating on Bed
13 Review
REDCAMP Foldable Laptop Table for Bed, Lightweight Small Laptop Desk Bed Tray for Adults - Ideal for Eating, Picnics, Writing - White
11 Review