Meritline offers the refurbished Logitech K310 Washable USB Keyboard, model no. 920-004033, for $21.99. Coupon code "MLCKS20UNL1" cuts it to $17.99. With free shipping, that's the lowest total price we could find for a refurb by $2, although we saw a new keyboard for $3 less in June. This keyboard can be submerged in up to 11" of water and features rear drainage holes for quick drying; a cleaning brush is included. Coupon expires after 100 uses.

Note: no warranty information is provided.