A few years ago, I thought I'd try to redesign the calendar (as these guys seem to want to do). My innovation was integrating a timeline navigation to allow you to easily animate between months and years. Plus, loads of visual customisation options.

Sadly, the product I developed didn't take off but if you are interested in a left field take on a calendar design, you might want to take a look: https://www.chronoflocalendar.com