The BBC micro:bit is a pocket-sized codeable computer with motion detection, a built-in compass, LED display, and Bluetooth technology built in. V2 now with microphone and speaker
This third generation model maintains the same popular board format as the Raspberry Pi 2 and Raspberry Pi B+, but boasts a faster 1.2GHz 64Bit SoC, and on board WiFi and Bluetooth!
While the Zero 1.3 and the Zero W have limits set to 1 per order, the Zero WH has no limits. Finally you can buy as many as you need to complete that project.