Meritline offers the Super Bright 3-LED USB Snake Light 2-Pack in Silver for $6.99. (It's the second option.) Coupon code "MLC9S27N" cuts it to $3.99. With free shipping, that's $8 under the lowest total price we could find for a similar pair of lights elsewhere. It features an on/off switch and can be used with any powered USB port. Coupon ends after 500 redemptions.