If you thought the $35 Raspberry Pi 2 was a small and cheap computer, think again. Next Thing Co.'s open-source C.H.I.P. is an even smaller barebones microcomputer that only costs $9.
Like the Raspberry Pi, C.H.I.P. can be used in a variety of ways. Connect the necessary parts — a keyboard, mouse, and a display — to it and it becomes a personal computer. Otherwise, you can hack it into a retro games emulator, or robot, or whatever you can dream up. Next Thing Co. encourages users to learn how to code and make things with C.H.I.P.