Amazon.com: GEHE Sofa Arm Tray Table Flexible/Foldable Sofa Tray Couch arm Table Perfect for Drink Snacks Great arm Tray for Couch armrest (16.5" L x 13.25" W x 0.4" H, Natural Bamboo) :
moebelhome Large Wooden Sofa Tray 100 cm Beech Solid Wood for Stool or Long Chair Couch Tray Stool Tray : Amazon.de: Home & Kitchen