NANO IO Shield Expansion Board for Arduino | Rajguru Electronics
Amazon.com: MyVolts 9V Power Supply Adaptor Compatible with/Replacement for Arduino Nano Board - US Plug with Extension and ON/Off Switch : Electronics
10x 30cm 2 Pin- 2 Pin Header Connector Female to Female Dupont Cable for Arduino | eBay
2pin Fan Extension Cable 12” or 72” – Coolerguys
How to Design a Custom Arduino Shield Board | Blog | CircuitMaker
Increase Digital Pins of Your Arduino Using the 74HC595 (IOExtension Module With Arduino Library) : 5 Steps - Instructables
Turn Any Appliance into a Smart Device with an Arduino Controlled Power Outlet