snow:

http://www.youtube.com/watch?v=qq6EppVvjsA
http://www.youtube.com/watch?v=4gZRgNQH0C0
http://www.youtube.com/watch?v=cOwWB4wFQmc
http://www.youtube.com/watch?v=LFf-iXSbtKM
http://www.youtube.com/watch?v=S84RQ-lmsDk

inside:

http://www.youtube.com/watch?v=Ai18EYyf6RI
http://www.youtube.com/watch?v=rWsevNVWLHU
http://www.youtube.com/watch?v=7uSIwqEvta0
http://www.youtube.com/watch?v=nIw2i3BvH2s