The AIY Vision Kit from Google lets you build your own intelligent camera that can see and recognize objects using machine learning. All of this fits in a handy little cardboard cube, powered by a Raspberry Pi.
Everything you need is provided in the kit, including the Raspberry Pi.
Google Vision Kit
You’ll need some additional things, not included with your kit, to build it:
Micro USB power supply: The best option is to use a USB Power supply that can provide 2.1 Amps of power via micro-USB B connector. The second-best choice is to use a phone charger that also provides 2.1A of power (sometimes called a fast charger). Don't try to power your Raspberry Pi from your computer. It will not be able to provide enough power and it may corrupt the SD card, causing boot failures or other errors.