So I'd love to know why one of my most relaxing distractions and unfortunate fallbacks is optical art. I love making op art in a digital context, there's just so much more room to play.
For this first one, I'd recommend setting it as a tiled wallpaper for a minute, just to get the full effect that it provides. The second is my first attempt at making my GIFs become more complex than simple color changes for motion in areas. I'll link to more of what I mean sometime, but good examples are few and far apart.