Walmart offers this Car Swivel Tray and Storage Bin, model no. 75-TV079, for $9.97. (Amazon has it for the same price with free shipping for Prime members.) Opt for free in-store pickup to avoid the $4.97 shipping charge. That's tied with last week's mention as the lowest total price we could find by $5. It measures 9" x 9" x 16.5" and features a non-slip surface and adjustable height.