Bill:
The best information about model trains often arises from practical wisdom -- like yours. Here's my point #26: Mount control buttons for action accessories on the perimeter fascia board of the layout near the accessory. Kids can find and press the buttons and then watch the action. Use Lionel #90 vintage push-buttons (with a large orange button) for goof-proof performance for simple ON/OFF devices.
Just saying ....
Mike Mottler LCCA 12394