Here’s a simple yet versatile stand that should last you a long time since it works with many common devices. The new iCarpus stand is certainly worth a look. It uses a large spring loaded leg to keep your device firmly in place, while viewing devices both in and out of their protective cases.
The edges of the iCarpus stand are coated in rubber for extra grip too so it won’t slip. It’s only $12. At that price what’s not to love?