Apart from the actual figurine to go in the thing, I've mostly got this recirculating snow globe together. I've put an adjustable flow aquarium pump into a separate glass container that has an opening the same size as the gasket for the bottom of the globe. Sealing it all up will be a bit of a trick. I've tested it with nothing but duct tape around the base, though, and apart from a little leaking around the power cord cutout, it worked great!
