Raspberry Pi Power Block Fan Mount
thingiverse
This supports a fan above your raspberry pi which can be wired directly into the power block. You may need to snap off one of the legs (easy enough) for it to fit properly. This will obstruct access to the camera module, but since I don't require that for my current project I didn't bother to fix it. Holes that connect to the power block are designed for m2 screws.
Download Model from thingiverse
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