No problem. I just saw the other commenter say ash maybe isn't a good idea. I have no clue. There is always conflicting info. Maybe peat would be better.
Anyway, good luck!
Today I just picked up a cat litter box and I have some sand to put in it. It might not be ideal but it's what I have right now. If I could, I would maybe add ash or some fine soil or peat moss. I just don't have that right now.
If I were you I'd grab a plastic bin of some sort and just fill it...