Given the size of the damn thing you'd need a HUMV to tow it into the woods and would make too much noise for any self-respecting moose to bear.

Bear in mind, too, that your Xmas present will be constrained by the phase-matching condition for strong interactions between the electrons and laser field - i.e. for a given periodic magnet structure, the wavelength is determined only by the energy of the electron beam.

You could, I suppose, set one up in your back yard to snipe at UFO's. They reach 10KW, which is probably enough to scorch any Venusian rocket jockey right out of his console chair.

A