this is one of the best water wall ideas i have found. really simple and lets kids turn the bottles to direct water different places. also keeps bottle caps to stop water! i am going to try this and use other containers too! would work well on wood too.
Colored ice cubes for water table play. This acitvity is a good outdoor activity. The children can have fun watching the coloured ice cubes melt into the water and change colours. Also experimenting with colour mixing