Sony’s DPP-MP1. Price: $280; optional battery pack, $70.

The palm-size, battery-powered DPP-MP1 digital photo printer from Sony provides instant gratification: Put in a Memory Stick (or connect it to your PC with a USB cable), and it churns out film-quality wallet-size prints in 2 minutes. Best of all, it weighs less than a pound, keeping your camera bag light. Price: $280; optional battery back, $70.