Here’s my tip - subscribe to a bunch of things of interest, and set your subscribed feed to top for the day. You’ll likely see a bunch of interesting posts.
Then browse all, top for 6 hours, and you’ll see some wide variety (except for days following a debate like today, that’d going to skew political heavily for obvious reasons).
You’ll find new and interesting communities to subscribe to, and make your subscribed feed all the better.
Personally I have different accounts for different interests, and for a few of them I rarely leave the subscribed/top for the day. They are more focused, and without a good multi-community feature that’s universal, its the next best thing.