I like using neocities for goofy sites like these

- Loading indicator that never finishes loading https://loading.neocities.org/

- Scrolling marquee tribute site https://marquee.neocities.org/

- DVD logo bounce via `<marquee>` https://dvdmarquee.neocities.org/

- A form that lies about detecting image alterations https://isthisreal.neocities.org