The BEST litterbox I've tried
This economical litterbox is just genius. It doesn't tip over, and while it doesn't entirely eliminate the problem of sandspray outside the box (especially if your cat tends to rush off too quickly after doing its business), it does lessen the problem by quite a bit. It gives my regular sized DSHs some privacy even when filled with 10-12cm deep of litter, you barely know they're in it. The only downside is cleaning out all the litter afterwards - it can hold a lot more than one thinks.