The one I'd like to discuss are the different ways kids can sharing their answers with each other. When I was in grad school, I had a teacher who was very much into this. She'd make us get in a group and each group would discuss a different topic, then we'd all get up and explain what we'd discussed with people. That was a quick and dirty way to bring information to an entire class.
The problem was that I always thought those processes were kind of stupid. I did not learn like that, and I kind of resented getting information as a sound bite instead of the deep learning from a teacher who knew more than me. Unfortunately, what's true for me may not be so for my students.
The EngageNY curriculum has lots of these types of processes: pairing kids up back-to-back, moving around the classroom looking for partners. Not that these activities make up for a dreadful curriculum, but they are worth a try.