I would say from games i own or owned:
- big foot on whitewater
- troll and castle on MM
- gofers on NGG
- mini playfield on IJ
- the thing on Addams
- pyramid and guards on Stargate
- supercharger on getaway
- cannons on sttng
Good toys are no doubt a plus on pinball machine and unavoidable to make a good pinball IMO.