I recently created this fun water station for the kids. The rectangular buckets are holding water balloons, water play toys, bubble solution and materials to make the bubbles. I hooked various bubble wands beside the bubble section so the kids can play with the bubbles on impulse. The square pieces are from home depot. They are rubber so the kids won't make a muddy mess. On the sides of the water structure are water spray guns for a water show down. Each part of the water structure has on/off valves so the kids can manipulate the various functions of the structure.
I placed large red buckets beneath the water structure for sensory play. Mr. Bubbles solution is a huge hit. The suds erupt all over the floor and the kids just love it! The structure itself is made of white PVC pipes and various water valves/sprinklers.