A working computer the size of a credit card? For $35? Sign me up!
The Raspberry PI, if you haven’t heard of it yet, is an amazing machine. Despite its tiny size, it is packed with features. It can run its own Linux version, as well as a few other operating systems, including a limited version of Windows 10.

So what can you do with one? Very cool stuff. I’ve used mine as a media centre, a retro gaming station and most recently, as a magic mirror.
To focus on efficiency, the latter is by far the most valuable for my wife and myself. Our Magic Mirror tells us the time, the weather for the next few days, our upcoming events and even shows us the word of the day. Oh, and it’s a mirror.
I really could not recommend the PI enough. Get one now, figure out what to do with it later. Are you still here? Go!
The small print: you will also need a power supply and a memory card. You can grab each for as cheap as $8. Depending on your project, you may need other accessories, such as a case, a keyboard, a mouse, a wireless dongle and so on.