The most obvious yet effective is a blooper reel.
“Un-bore” your content
Paddle into the pool of newsjacking/reactive social.
Use emojis, visuals, GIFs and memes to add intonation and diffuse tension.
Use metaphors far outside of your field. Bonus points for pop culture.
Riff with other brands/individuals whose humour appeals.
"What keeps you up at night?" (and d-list celebrity-dom)