Some people have been AIMing me about what to do with the snowman's hat. (SPOILER)
Well, you put it on top of the timer.
(END SPOILER)
Summary - Trish
Pick up the items, put them on the hangers. When the whole set of objects is out of the water, a timer counts down. If the objects can stay out of the water for that long, you get another object. It keeps going until you beat it.
The object is to see how far you can get without having the various items in the water. It doesn't sound very good in words, but you'll see when you play it.
A lot of work when into this. Enjoy!