Breadboards are used to prototype electronic circuits.
We offer a decent sized breadboard, commonly called an 830 point breadboard.
We optionally have 3.3V/5V power supply unit (MB-102) that takes in 12V, and provides a regulated 3.3V and 5V voltage, depending on a jumper setting, and/or a 12V PSU, since you might not have one. The one here is 1A. If you need 2A or more, check out the 12V 2A power supply product.
You can get the same effect using some components, as described here: