Basing: What to use.

So, I have been thinking, for basing I have:

Static Grass
gravel
can get spikes/bits of buildings
can make snow
can get sand

I'm thinking for my wolves to use gravel covered in snow/rubble, maybe tiny sprinkles of static grass to make foot prints.

So, what would you sugest, I know I haven't been updating much but this will not be overly regular because I am not always working on wolves.