Your Mac's pointer, as the WaveLoop gem.
A low-poly pyramid replaces the arrow everywhere. It leans into links and buttons, lies down in gold over text, splits at a window edge, and turns pink when you click.
To know whether the thing under the pointer is a button, it asks macOS through Accessibility. The first launch asks once; grant it in System Settings › Privacy & Security › Accessibility. Without it the gem still runs — it just only knows about links.
Local. No accounts, no telemetry. It reads where the pointer is and what kind of control is under it, and nothing leaves your Mac.