SONGMICS Bed Laptop Desk, Folding Bed Tray for Laptop up to 15.6 Inches, Adjustable Angle and Height, Portable for Working Reading Writing Breakfast, Bamboo, Drawer, Light Bamboo ULLD01N

Second the tray for bed! I was trapped in a hospital bed for many months, after a terrible car accident. I got a bamboo tray table, with a top that angled & height adjustable legs. Similar to this. Sanity saver for me. You might find it helpful.