Todd Johnson’s Shockfossils are “multimillion volt Lichtenberg figures in acrylic.” He masks acrylic slabs with lead and then rents time on a commercial particle accelerator and the result are beautiful, fern-like fractals.
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Mini Post-It sponge
A mini Menger sponge built from Post-Its. Each Post-It was torn into 16 equal squares, then folded into units and assembled into the sponge. Post-its offer surprisingly structural durability and are easy to get in large quantities making them ideal for assembling structures like these.