One thing I've been playing around with these last couple weeks is floor exercises. For example, I read a study the other day (and I've written before) about rolling. It shows how rolling movement can help improve coordination and core strength.
Floor exercises are one example where there is a big difference between children and adults. Children have no trouble transitioning from upright movement to floor movement. In contrast, if you picture an elderly person, you can imagine them having trouble getting down to the floor and being comfortable there.
I think floor exercises have a big potential for improving overall movement and body awareness.