Jelly Comb Direct via Amazon offers the Jelly Comb Rechargeable Portable BT Wireless Foldable Mini Keyboard in Silver for $29.99. Coupon code "C6SLD2TU" cuts the price to $19.79. With free shipping, that's $10 off list and the lowest price we could find. It features a touchpad, is compatible with most Bluetooth-enabled devices, and standby time is up to 560 hours. Deal ends December 20.

Update: The price has dropped to $25.99 before coupon, $17.15 after.