Pulleys. Well, at least pulling.
As if I needed another reason to love our Mulberry Tree.
Not much to say because the kids figured out what to put in, pull up, pull down, pour out, pass to their friends. It's like almost everything else, we provide the supplies, they fill in the blanks.
We had to do some minor repairs and problem solving (like the broken bucket handle below), but it was (is) worth it.