Finally after many many iterations and bad ideas, i present the best bad idea yet :)

And it works !

A modular pinball drop target.
As part of my DIY pinball project i needed to design some drop targets.
This is a complete/final model that works just fine.

I used a small piece of elastic band to put tension on the target, i tried using a spring but it was too much for the server. perhaps a softer spring could work.

Servo motor: Tower pro (13mm*24mm)
Micro switch with NC & NO contacts.

The model was designed in Fusion360 and is included for download. It has been a long work in progress and some mistakes were made along the way.
As for the reset mechanism, well this was just the best of the bad ideas i had and it seems to work fine in testing so long as the servo's had plenty of current yo work with.

It is modular with a common bolt hole in the base so you can connect as many as you like.

Fusion & STL files https://www.thingiverse.com/thing:2772610