I briefly searched the internets, but did not see that this had been discussed before.
It turns out that you can use a Cactus V4 (and maybe V2) flash trigger as a wireless shutter trigger.
In other words, you can remotely trigger you camera’s shutter from afar! Triggering the camera is as simple as pressing the button on the Cactus transmitter.

Aside from the coolness of just being able to trigger a camera like magic, one other use that comes to mind is triggering a second camera whenever a first is fired. You could document the lighting setup for every studio shot.

I can also combine this with my intervalometer to remotely fire my camera every x seconds; no need to attach the intervalometer to the camera. Could use a laptop etc for the timing.