I've made a couple of bags for my mom for her walker over the past few years. This pretty green one is the most current. I think it's the prettiest one I've made for her.
My husband's aunt recently began using a walker and my mother-in-law asked me to make something for her also. They wanted something that was more like a basket - you can't see it from this picture, but there are pockets on each end that can hold a can of pop or bottle of water.
There is a little change pocket on the outside and then inside is a zippered pocket and a divided flap pocket.
I hope it works out for her.