Bar Shampoo Soap Dish

We use bar shampoo in the shower.   We had just put the bars on a wire shelf in the shower.  As the bars got smaller, they fell through the space between the bars.  I tried some wire mesh, but that left the bars mushy on the bottom.  So we are trying an alternative soap dish idea.  It is open on the bottom to let the shampoo bar dry out and not get soggy.