Activities while laying down could include skydiving, swimming, sliding, floating through space, surfing (going from swimming to catching a wave to standing up), street luging etc. The possibilities aren't endless, but they are enough to provoke some serious thought.
If no one is around to judge you, try laying down on your belly and imagining racing down some enormous slide. That you're actually moving dozens of miles per hour. Then try imagining what that would be like with GVS. Then try imagining a way to make it more comfortable
![Laughing :lol:](./images/smilies/icon_lol.gif)
Do you have any ideas for VR while laying down?