Pinecone

Splashery stretches a drumhead over this Splash's outline, twelve inches across, and finds the ways it can ring. Its lowest is 459.5 Hz, 25 cents flat of B♭4. The next fifteen are its overtones, and each one draws its own figure: sand gathers on the lines that stay still.

Tap it to open the scales and drop them. Hands-on: pull the scales off one by one.

A pinecone is the part of a pine tree that holds its seeds. Its woody scales are arranged in spirals, and under each one sit seeds with thin wings. In dry weather the scales open so the seeds can fall out and spin away on the wind; in wet weather they close up tight again.

Tap it and the cone opens as it does on a dry day, and winged seeds spin down like little propellers. Then the scales facing you break off one after another from the bottom up and tumble into a pile, showing the core. Then they fly back up into place and the cone closes. With ✋ Hands-on on, pull the scales off one by one; each snaps off at its root and drops; reset puts them back.

Made in Splashery. Its code is MIT.

This link opens it in the Playground. To put it on your own page, add the element and one script tag. Every option.