Late last night Canaan had fallen asleep on our down filled comforter. Ryan was about to move him when he spewed his dinner all over the comforter. As I put him into the bath, Ryan put the comforter in the wash.
This morning I found the comforter in the completed wash completely flat. I put it into the dryer with a tennis ball. It's now back to it's old self, and so is Canaan.
You can also do the same thing with down filled pillows.