Sometimes it's just working collaboratively, creating an atmosphere where you encourage the "junior folks" to ask questions without judgment. Also whenever you stumble on something interesting you share. I miss this aspect of my current job, am 100% remote and miss those discussions.
I am a 'junior folk'; I don't have a problem collaborating, the people walking behind me didn't care what was on my screen and many of them wouldn't have understood if they'd looked (different roles) - it's just the fact that I can feel people there that distracts me and compels me to look, even though I 'know' they're not watching, couldn't care less, and will be gone in a second.