My take on the todo list, with a feature the procrastinator in me appreciates. Don't forget to bookmark the URL (with UUID) if you don't want to lose your list, as there are no user accounts.

https://www.propup.net/

Whenever I want to try out new tech stacks, I add a project here. So far I've played with (and really enjoyed) Django+intercooler, ClojureScript + REST API and Phoenix LiveView, but have only made the bug reporting/feedback system public (that's the ClojureScript one).