It's hard to be completely original. But I have a little trick for workshops that I've never seen others do, and participants love it.
I love passing out notebooks because they give participants the opportunity to actively listen by taking notes. (And, in my experience, most do.) Providing notebooks at the start of a workshop reinforces the message that participants need to take responsibility for their own learning. And, notebooks are just physically nicer and more cozy than slide packets... even the good ones.
The main problem with notebooks is that they force participants to copy down material. By printing important concepts on stickers, participants can literally cut and paste a reference directly into their notes. It's the best of both worlds.
There is a downside to this technique: rather than just printing out your slides, your stickers have to be custom-designed references. It's more work, but I find that it also results in better materials. Worth it.
People who've been to my workshops keeping asking me if they can steal the technique. I asked them to wait until I documented my one original workshop idea. Now I have. If you use this idea, I'd appreciate credit. Other than that, share and enjoy. :-)