Keyjump via eBay offers the 16-LED Flash and Fill-In Light for Smartphones and Tablets in Black or White for $2.71 with free shipping. That's tied with last week's mention and the lowest total price we could find by a buck. It's compatible with most smartphones and tablets with iOS 6 or later, Android 4.0 or later, or Windows Phone 8.

Note: Expect three to eight weeks for delivery.