Unfortunately, unless you buy mounting hardware you really can't it stay upright all that well. I've had to trim a few down to get them to kinda squeeze in just right so the glass holds one side and the floor holds the other.
I guess you could create a base too, kinda like what you see on large driftwood pieces at stores.
Just get creative. Your snake will probably move them around anyway.
And you're doing an awesome job!! It shows that you care in how eager you are to learn and fix things. Keep up the good work and your pet will have a great life for many years!![]()