Ah, that old favorite of ours, the Raspberry Pi—modern-day insane computing made manifest in a tiny device that fits in the palm of your hand. Capable of powering 4K resolutions on the cheap, you can indeed install the likes of Kodi on a Raspberry Pi with little fuss, and it’ll run identically to its other, bigger, Windows 10 brothers, seen below. It’s super-affordable, too, coming in at $35 for the Pi 3 Model B. The only downside is that the vast majority of your media will need to be stored on an external hard drive or something similar, and connected via USB 2.0, meaning at max the only content you’ll be able to drive through it is standard 1080p stuff, outside of streaming, of course.
There’s a wealth of other streaming boxes available from some of the big names, including Amazon’s Fire TV Stick, Roku’s Streaming Box, Google’s Chromecast, and even the Apple TV, if your budget can stretch that far.
If you’re dead set on using Kodi, though, your best bet is to grab a Raspberry Pi. A lot of the third-party sticks we've mentioned run proprietary software and interfaces, and although they may provide you with some of the utility of Kodi, installing it on there after the fact is a bit of a nightmare.