Heart Cookie

Splashery stretches a drumhead over this Splash's outline, twelve inches across, and finds the ways it can ring. Its lowest is 275.8 Hz, 91 cents sharp of C4, the nearest tine on the comb. The next fifteen are its overtones, and each one draws its own figure: sand gathers on the lines that stay still.

Tap it to make the jam heart beat.

A jam cookie like this one is two thin, crumbly cookies with a layer of fruit jam between them. The top cookie has a heart cut out of it, so the red jam shows through like a window.

Tap it and the jam heart glows and swells twice, like a heartbeat, in time with two soft thumps. Cookies with a window of jam are baked in many countries, often for holidays, and the top is often dusted with powdered sugar.

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