EverydaySource offers the Foldable Wired USB 2.0 Keyboard in Black for $9.99. Coupon code "S0531UVMT" cuts it to $5.59. With free shipping, that's pennies under our February mention and the lowest total price we could find for such a keybord by $7. This flexible silicone keyboard purports to be dust- and water-resistant. Coupon expires after 1,000 uses.