After moving into a new place, Peter from Sweden had a bunch of spare IKEA Ribba picture ledges ($9.99). He decided to use one as the basis for a tablet/smartphone stand that he could use on his desktop. For the full instructions, check out Peter's post about the hack on IKEA Hackers.
With the same Ribba picture ledge, you'd probably have enough material for a few different stands, since they measure about 21 inches in length. IKEA Ribba ledges can also be used to wrangle your cords. Check out this post for more ideas. If you're not into DIY, then you can peruse Etsy. They've got many different stands that might suit your fancy. MORE TABLET STANDS ON APARTMENT THERAPY: • BLÖCT Wooden Tablet Stand • Best of DIY Tablet Stands • Bedside Tablet Stands (Images: 1, 2, 3. Peter, via Ikeahackers, 4. credit as linked)