I found this online but haven't tried it so I don't know if it really works. We get enough of the real stuff here so I probably won't bother, but it would be nice where you are.
Faux snow:
l lg. bar Ivory soap
food grater
mixing bowl
2/3 c. Sta-flo concentrated liquid starch
2 Tbs. water
l Tbs. Wee crafts diamond dust glitter (it's the BIG-sized clear glitter)
l Tbs. Cretive-beginnings diamond dust glitter (Gold ultra fine)
Grate soap on "large grate" side into bowl. Add liquid starch & begin mixing on low until
starting to blend. Then, slowly graduate to higher speeds until it begins looking fluffy. Add
the water & mix on med. to high speed until it gets to the consistency you prefer. Then
add glitter & CAREFULLY mix on slow speed until blended thoroughly. (The glitter isn't
very noticeable until snow is applied). Place in container or on project and enjoy! And
guys, it really, really, looks like the real deal. Just thought I'd share.