This boombox is a gift from Great-Grandpa Keith and Great-Grandma Carol. Here you can see it in action with a rendition of "London Bridge".
Coming downstairs on Christmas morning
This is the first Christmas where Will knows about Santa, so he came downstairs to see that Santa had brought him the Elmo slippers he wanted!
Uncle Jeff has a weird thing about the chicken dance: it is unclear whether he loves it or hates it. So his family got him a festive dancing chicken that, of course, does its dance. Will loved it though. He apparently learned the chicken dance at school or on the streets somewhere because he knows all the moves.