Pi Zero Expansion Hats

I would like to assemble a list here of Pi Zero format Expansion Hats.

Lets start with a board that I know is supported on FreeBSD and we will go from here:

In the same vein I just ordered something with terminal blocks:

I have several more Pi Zero Hats on the way.

What are you using?
 
I am eyeballing this primitive hat. Has i2c breakout too.


I don't like how it uses the Pi Primary UART pins. Console use them and it is a pain to move the Primary UART console.

Pin BCM23 for GPS RESET is also problematic because it uses pin from UART4 on Zero3E. So 2 UARTS for one device.
Not good for me.
WaveShare makes a GPS Hat but not stacking header on 40 pin.
 
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