[flxy]

Maybe a short, abstract svg animation of how a certain feature would look like and behave? Probably a little more work to implement (well) and keep up to date but I've liked that sort of thing on the few sites I've seen it on in the past. Sadly can't think of any right now though.

I also remember algolia having some sort of movie search demo as their top banner a few years ago. Including their completion and such. Always struck me as a good way to introduce their service in particular.