You have several options when trying to organize your shower but they all boil down to some sort of shower caddy.
You have several options in a caddy depending on the amount of room in your shower and how much stuff you need to organize.
There are the racks that hang from the shower head, the stand alone rack, the spring pole and the wall mounted rack.
You just need to decide what is best for your situation and what will best fit in your shower.
The stand along option can hold the largest amount of items but it does take up space in your shower.
It will limit the amount of walk around space in your shower.
But they do hold a lot and are great if you have a lot of bath items.
A similar option is the spring pole and is a good replacement of the stand alone rack.
This is a pole with a spring in it that has shelves mounted along it for storage.
These are nice because they still give you a large amount of storage but save the walk around room.
The next option is the hanging caddy which hangs from the shower head.
These don't hold as much as the stand alone of the spring pole but they may hold enough for you to be able to get by, it all depends on how much stuff you need in the shower.
The good thing is that they do not take up any room at all.
They sit right against the wall and under the shower head completely out of your way.
The last option is the smallest, it's the wall mounted option.
These usually use a suction cup to stick to the wall and they generally only hold a bar of soap.
You may be able to find some that hold a bottle of shampoo and conditioner, but, the more weight you add the less likely it will hold over time.
All have a purpose and can fit almost anyone's needs.
You just need to decide what method is best for you and what will fit conveniently in your shower or bath.