Walmart offers the Furinno Bamboo Adjustable Notebook Lapdesk, model no. FNCL-33009, for $26. (Amazon charges the same with free shipping for Prime members.) Opt for in-store pickup to dodge the $5.97 shipping fee. That's $2 under our June mention and the lowest price we could find by $8. It's made from bamboo and features foldable legs.