Update: The price has gone up. Originally $30, Walmart.com now has the Tablemate II Portable Table on sale for just $24 $28.54. Receiving near-perfect reviews from over 100 buyers, this adjusts in three different ways: to your body size, to the activity you're doing (it can tilt for a laptop or magazine), and to the way you are sitting. Assembly requires no tools. Shipping is only $1.97, site-to-store pickup is free, and sales tax is charged in most states.