Jenny over at Let the Children Play who provided ample options for creating waterwalls. I immediately put the waterwall on my long list of things to do.
However, as time passed and I thought about things through our long winter.... I realized that I didn't just want a water wall. We have a HUGE sandbox, and I'd want our wall to be for both sand and water. (And whatever else we decide to use it for!!!!)
I also found a lot of inspiration from Tom over at Sand and Water Tables. Tom encourages the addition of different options to sensory tables. With a little more thought, it became clear that our huge sandbox is really just a big outdoor sensory table. So, with that in mind, combining the ideas and inspiration, our sand and water wall was created.