Corn cob is extremely drying. The cheapest and best is good ole newsprint or paper towels. It might not look as cool but it is very hygienic and easy to clean.

Depending on where you live, an aquarium may not be to good for your snake. If you live in an area that stays fairly humid it might not be an issue. If you live in a really dry area like me an aquarium is terrible. Aquariums do not hold heat or humidity well at all.

The cheapest alternative to an aquarium is a tub from walmart. You can burn holes in it for air to circulate. They hold humidity and heat super good.

You might check out the care sheets on here.