Check these awesome zero compatible pogo pin clips :
https://www.kickstarter.com/projects/12 ... ef=piforum
They are awesome for rapid prototyping and also connecting headerless boards such as the zero or other addons.
The Ultra 2 sound card - Preview now on kickstarter : https://kck.st/2H95YIz
Sound card for the Raspberry Pi with inbuilt microphone : http://www.audioinjector.net
Audio Inector Octo multitrack GPIO sound card : http://www.audioinjector.net