Property based testing sounds nice, as developers we like to automate things, why not our test cases?
Besides a talk, this sounds like a good topic for a workshop. Elixir has a few libraries to choose from, with QuickCheck being the most mature/advanced but also expensive.
Other open source/free alternative are PropEr, ExCheck and ... ?
Please vote on this idea with 👍 / 👎 . Comment if you have some suggestions and/or know someone who might help by giving a talk about this topic.