my routine is basically only checking watched threads I have three pages worth, about a page of which gets near-daily updates, so this already takes up a lot of time and then doing whatever. Sometimes I'll check the Reactions page next to see who's reading what, sometimes I'll feel masochistic and tune into USPG2, often I'll make a beeline for Pictures that Have Made You Laugh Hysterically or Random Pics and Gifs. If I'm bored and caught up on the news, I'll usually go to Games/Multimedia/Art & Literature and check in on threads I care about enough to read but not enough to watch.
If I'm ever in the mood for proper Cows, Community Watch is my go-to. 4chan used to be a go-to thread before the shutdown, since I liked reading random greentexts or seeing what other people thought of the site, but since it's now basically just a slightly less retarded Sharty thread I'm not really interested. I've found myself wandering into Animal Control or Internet Famous a lot more as of late, the latter especially.