How about we go the other direction: how to stop being bored by other people.

Most people are fascinating if you engage with them in good will and solidarity. That doesn't mean you have to like them or support every opinion they hold or behavior they exhibit, but just take them as they are and figure out what they are interested in.

I have been surprised to find that many "boring" people are, instead, shy and are much more interesting than the extroverts that are usually labeled as such.