Stone's suggestion is good about maybe camera now and film later, unless you hope she moves on and you get to keep the cam

Stone,

The cubes seem to crop up on ebay every now and again. I have one of the flash gun types in my attic, not sure of the model, but I can take a look if either of you are interested. without looking I can say it works with my sonar, so imagine it would work with most others too.