These are super eerie… awesome, but just a little otherworldly. :-)
"Three out of six surfaces of the cube are made of flexible membrane (foil mirror) with air tank and a compressor connected to it and the other three mirrors are semi transparent spy-glass. By inflating or deflating the air tank, the membrane turns convex or concave, deforming the reflections." Via.
Tomorrow I brew leek soup, all are invited