I'd get or make an L bracket that has a hole for a cable release. It would give you a handle as well.
Does your camera not have a release on the body, with a switch that select which shutter (front or rear) it will fire? Pacemakers do; I guess Anniversaries did not, or yours has disappeared somewhere along the road.
You could also just spring for a solenoid, and mount a flash (which also gives you a handle). They are handy devices.