I really like how easy it is to create animated banners. As someone who has never made an animated banner in his life (and barely does graphic design), BannerBoo makes it super easy to design a banner (think Canva) and almost as easy to animate (its maybe not as simple as designing with Canva to animate it but once you've watched the video tutorial or looked at an example banner its easy to learn how).

Only issue:
The banners seem to export in low quality, I hope they can improve this in the future.