What I'm looking for is to be able to solder a mechanical pressure plate/arm to a PCB, where a plastic tab can be inserted.
This contact (when connected) will complete the 3.3V/5V supply and turn on the device. Similar to how some manufacturers put the little plastic tabs in the battery housing so that all you have to do to start using the device is to pull the tab out.
In the picture above, the red rectangle would be the PCB viewed side-on. The blue component would be the little conductive arm/plate which naturally wants to close and make contact with the other little blue area. The orange line would be the plastic tab preventing it from making contact until removed.
Any ideas if such a thing exists and what it would be called?