Alternative for digging tower

[peculiarplanets]

Alright so Jupiter has proven herself to be an avid digger. The sand bath I set up for her is her favourite digging spot, but the problem with that is that there is now more sand outside the bath than in the bath. I know there's such a thing as a digging tower but the ones I've seen are too small for Syrians. I'm afraid that if I put a deeper bowl into her cage, she might struggle to get out. I want to cater to her needs and give her an area in her cage where she can dig around, without getting sand all over the place. Do you guys know anything that would be suited as a digging space?