does anyone have a solution they love for booking appointment slots at an event (e.g. office hours where people can book a 20 minute slot, or headshots where someone can book one of five availabilities in a given time slot)?

everything i’ve experimented with is pretty clunky for this use case. whether it’s something more meetings-focused like calendly or doodle or something more services-focused like setmore or picktime, they’re all more suited to showing ongoing availability rather than something one-time.

any great options that i’m missing?