Depending on your tour budget and the spaces you're going into, you might consider using a projector. SmallTimeSM seemed to be coming close to this suggestion with GAM film loops. I have been seeing rain projections used more and more these days, and it works out well. Depending on how large the space is, you may need a sound effect to match. If you use real water, be ready to deal with the safety hazards, especially on a tour. The last show where we used water had at least 1 injury report per night, no matter how carefully we kept it under control.