Here's something I like about work: every month we have a Genius Hour.
That hour happens during a lunch break and between 20 and 30 people turn up (during their lunch break) for each session. I organise the session but it only takes me an hour or so each month.
What do we do during these hours? This month one of my workmates is presenting a "beginners guide" to the Raspberry Pi, complete with real live stuff. Last month one of our colleagues, a trained physicist, gave a talk on "Critical Thinking" - I missed it but people loved it. Before that we had a bunch of lightning talks. And before that we had a session on Introversion and the book Quiet.
This stuff is really easy to organise. It's a little different. And people like it.
Why not give it a go yourself?