Well if I had to add one to the list I would say Chip makes the cut.

Chip is a TINY wireless, WiFi+BLE, computer with 1GHz + 512mb RAM + 4GB flash that started as a Kickstarter project too, that I've personally backed, for 9 USD, and received already.

I've been playing with it for a while now and I'm pretty happy with how it works.

For more info you can check the website getchip.com and I really recommend checking out the forums where the community has made a lot of contributions since it is fully Open Source.

I can write a Story with more info if anyone is interested, just let me know.

Disclaimer: It may sound like i was paid to advertise it but I'm just a happy backer...