Review on Explore the Versatile REXQualis Electronics Basic Kit: Power Supply, Breadboard, Jumper Wire, LED, Resistor, and Over 300 Sensor Components for Exciting Electronic Projects! by Cory Spence

This is a small breadboard about 3" x 2" that can connect two separate power supplies, like my Arduino Nano board. It's nice that it includes a power bank that supplies both 5V and 3.3V. To use this built-in power bank, you can either supply 5V from a standard USB outlet or charger, or plug in your own power bank. 9V 1A DC power supply, and it connects to the 9V connector on the circuit board. The power supply can be separated from this breadboard should you wish to use a larger breadboard. The included jumpers and an extensive list of electronic components are worth the money.