There are plenty of cheap tablet and smartphone stands on the market. Not all of them work great on uneven surfaces. The Binge Buddy is designed just for that. It works great on your sofa or in bed. It measures 5.75″ long by 5″ wide and can hold your iPhone or iPad.
Binge Buddy is made with ABS plastic, weighing only 3.5oz. It has silicone rubber feet to stay put as you interact with your smart device. Pretty affordable too.[where to get it]