Here is a source for some Stainless Steel momentary mini switches, they are about the size of a pencil eraser. I really like them and have used them on many mods, they hide very well...... My latest mod on my 67 Camaro.... the window cranks are the power window switches etc..... I put a mini switch on the side of the dash, with a series of relays, so that when you press the mini switch, the drivers side window crank controls the passenger window.... completely hidden and looks completely stock. I put another mini switch just above the window switch that unlocks the doors.
Harley Mini Push Button Momentary Switch s Steel for Custom Applications | eBay