I have been toying with the idea of having indoor water play time now that it's too cold to do so outside. My dhk's LOVE playing with water and it keeps them playing nicely for a good hour!

Do any of you 'do' indoor water time? How do you keep it from becoming a huge mess? I also have never done sensory bins either as I'm afraid of the huge mess that will ensue! On my full days I have ages 2, 2.5, 2.75, 3.5, 4, and my own 4 year old.

Thanks