There are about a dozen different things people can use for hamster bedding, what are you talking about?Would hamster bedding be a good substrate for a corn snake?
Aspen is neat.
i definitely recommend eco-earth /bed-a-beast for inverts but my experience is that it's not that great for snakes...when it's dry it's way too dusty and fine-grained...it can sometimes cause respiratory problems and it can get between the scales and cause skin irritations...i use cypress bark for my nerodia sp water snakes and aspen for my boids...they're both semi-easy to clean and keep it looking natural and the snakes seem to like itFor a real naturalistic substrate you can try Eco-Earth (coconut fiber) or peat moss.
I've experimented with about every substrate tha I can think of including shredded paper and news print or paper towels are the easiest clean, aspen is excellent but for a natural look you have to go more toward soil looking types like Exo-Earth.
Regardless of what you use I would suggest that you feed your snake in a seperate container with paper substrate to avoid the snake swallowing any substrate which could cause impaction.