All the hate on crocs kills me.
I got a great deal years ago on them ($3 per pair) and bought several pairs in each toddler/preschool size (they are a hideous pattern, but functional). They are so great for the kids to grab out of the bin to go play in the sprinklers. When they come in I can toss them all in the washer with bleach. It was such a great solution to having to maintain everyone's personal street shoes after muddy play. We do water play every day in the summer, sometimes twice per day.
What does everyone else do for water and mud play?