HTMX's whole vibe is amazing. It's good tech, kept simple, useful in gobs of situations, but doesn't take itself too seriously. I've used it in professional and side projects since intercooler.js, and still love it. Here's a crazy unicorn-laser-eyes mug[0] that evokes the vibes of NROL-39[1]. I adore it.
[0]: https://swag.htmx.org/collections/octohorse
[1]: https://en.wikipedia.org/wiki/USA-247