app that you can run on your desktop to have people be able to draw over your screen with a lazer pointer. uses tiny-skia and softbuffer.

compile with server feature on and run that on your desktop, and compile with client feature and give that to your friends / host it on your website (it supports WASM, see build.nu). set SERVER_URL to configure the server URL for clients when building.

see https://gaze.systems/annoy for a "demo".