If you are looking to build a circuit to verify that it works you will need to make a prototype. It is an easy way to test your design and great for debugging your projects.

Find products that help you make prototypes of electronic circuits including many types of connector like cables, wires, headers, pins and sockets. A wide selection of breadboards and tools for PCB fabrication amongst other products associated with prototyping.

Grove Bundle Starter Kit For Arduino + Arduino Uno R3 - Kits
Grovepi+ Bundle Starter Kit + Raspberry Pi 3 Model B+ - Raspberry Pi Kits
Stemtera Breadboard - Arduino Uno + Lego® Compatible - White - Kits
Cool Components Bbc Micro:bit Protoyping Bundle - Kits
STEMTera Breadboard - Arduino UNO + LEGO® Compatible - Black - Kits Sold out
Grove Bundle Starter Kit For Photon + Photon Wifi Development Board - Electron
Stemtera Breadboard - Arduino Uno + Lego®Compatible - Blue - Kits