Looking for a good organization method for grind wheels

My company has a large area of the shop committed to large CNC grinders. We have a ton of different sized grinding wheels that really do not have any good storage organization. What we need is something to organize the wheels with so that we can visibly see our remaining inventory, that way we know ahead of time whether we are going to need to order more or not. Anyone have a good way of doing this with grinding wheels specifically?