SD MicroSD Memory Card 8 GB for Raspberry Pi
A Raspberry Pi wouldn't work without its operating system(OS). You would need a microSD card to have your OS installed to your Raspberry Pi Board.
This microSD card can store up to 8GB of files. It supports the use of almost all devices. It also is waterproof, magnet proof, and x-ray proof.
You could also use this microSD card for any other purpose, like using it as a storage for your Arduino projects.