Modular Raspberry Pi Mount

I'm using a Raspberry Pi in my latest project and I've been looking for a suitable mount.

I don't want a case, because I want access to the GPIO pins, and I'm not 100% sure of what else I'll be adding yet. I'll be using the camera, and probably adding a few buttons and maybe some lights.

There's a lot of cases on Thingiverse, but none of them seem to be exactly what I'm looking for. So I'll make my own! Hopefully some of you with the same needs and constraints may find this useful too.

This mount system consists of the base, and add-on pieces for the camera and some stripboard for prototyping. I've included a picture of the mounting dimensions for those that want to make their own custom add-ons for servos or sensors etc.

Each of the add-ons has relief to access the SD card when mounted on the front.

I use a 0.3mm nozzle for smaller things like this, although 0.4mm will probably work ok. Print the parts in PLA or PETG (I used PETG) at 50% infill, and after cleaning up wi