A couple of ideas for typography animations and letter (hover) effects for playful interactions. Anime.js is used to create animations.
A tutorial about creating set of inspirational letter animations for display typography effects and large headlines powered by anime.js
An experimental letter animation made with SVG and anime.js based on the Dribbble shot "Shading Letters in Illustrator".
An experimental plugin for animating SVG letters using Segment. The idea is to animate the path strokes of an interesting display font in a creative way.