Or how about a waistline stretcher? It sits in the waistline of her pants so she doesn't have to do that awkward stuff-the-ol'-love-handles-in-the-jeans dance when she puts her britches on. Actually, scratch that. That would be totally offensive.
These and more strange and borderline inappropriate Mother's Day gifts here. Only get your mom these gifts if you completely hate her — they're just a step above a bouquet of dead roses.