Adafruit Large Solderless Breadboard is great for really big projects. This massive breadboard gives you a prototyping area of 2250 points. This area is equal to three full sized breadboards side by side.
The breadboards are mounted onto a metal plate, and the pack comes with 4 colored posts, so you can use with a bench-top supply. Four bumpers are included, to keep the board from slipping around your desk.
Adafruit Product Page: https://www.adafruit.com/products/443