Jumper Wires and Connector Housings
Here, I recommend you purchase some colors of jumper wires and housings.
The color wires help you to keep track of your connections and avoid connection errors, such as short-circuit connections, reverse power connections, etc. For example, always use black wire for ground and red wire for power, so you will easily and quickly recognize the power source wires, and make sure they are not connected together, and that there is no reverse connection to the power supply sources.
The connector housings can help you to organize connection wires. Using connector housings with color jumper wire can help you to easily reconnect the devices without having to connect each wire every time, and reduce connection errors.