Printables link. Apologies for the... very lazy select + background blur. In the land of windows I would have used paint.net, but I'm coming to you from a mac today and haven't found a great alternative.
this post was submitted on 12 Oct 2026
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Looks like one of those tornado tube things you could get at Natural Wonders back in the day. Half fill a bottle with water, screw on the tube, then screw an empty bottle onto the other end of the tube. Then turn the assembly upside down and shake it around to produce a vortex in the draining water.
That's exactly what this is based on.