Get down to the pharmacy & get a box of Magnesium Sulphate, also known as Epsom Salts (well, in the UK it is). Don't eat the stuff, it's a very effective laxative. It also, however, is a very good (& cheap) scale snow.
Apply white glue to your base, sprinkle this stuff on there, wait for the glue to dry, lift base onto edge & tap to release loose snow, and there you have it.
Not too sure about it's ability to travel, that will probably depend on how much glue you use, but you can always sprinkle a bit more on when you get there.
CAUTION, always wash your hands after use, unless you want to find out how good a laxative it is!
Pete