The PowerTwig is a tiny breadboard-able power supply;
- Tiny, just 3" x 0.2".
- 3 sets of headers let you connect to Vin (power straight from your power adapter), 5V & 3.3V.
- 2mm power jack lets you connect 6V-10V power adapters, or connect your power source directly to the Vin headers.
Works with breadboards and protoboards - it's an easy way of providing regulated power for any project.
More info on the Project Page.