I was a Sunday school teacher exploring interfaith with my students. One Sunday we drew a Mandala of their design of things meaningful to them on a sheet of plastic that fit on a circular table...and we mixed and dyed sand with food coloring.
The next Sunday they used funnels, paper cups and squirt bottles to fill in their design with colored sands. we spoke of meditation, and mantras...impermanence, no self and suffering (this is taking to long, it hurts to reach that, are we done yet ... lol) at the end of the church service we walked the parents and whole congregation out in a line where they were able to walk around the table once (in silence) before forming a big circle. The kids then said little about their task/art and what they learned of Buddhism and then they walked forward and flipped the table...the shock of the crowd was great...as they complained of not taming a closer look or not getting pictures the kids told them more about impermanence.