Useful for those whose noses were affected long term by COVID.

Not quite. Worst case scenario is I make a torture machine for any dog, cat, and maybe other non-human animal in the area.

I found one for sale that does 40k that has the same form factor as the one shown in the paper. I almost want to make a high-speed coldbrew system but I don’t expect it’d be worthwhile for the coffee, only maybe for the fun of building it.

Piezotransducer? As in the little thing that makes electronics beep and buzz?

The realist in me says ‘Ooh, what interesting systems created a seeming whale ossuary?’ The child in me says, ‘OoOoOoOoh, something down there is so big it eats whales. Do not disturb the Leviathan.’