You may be keeping your soap and bottles of shampoo and conditioner on the edge of your bathtub. There is really nothing wrong with that, but you may find that you have more bath products than you have space. If this is the case, consider getting some kind of shower caddy. These don’t require any complex installation: you just place them on the ledge or hook it to the shower head, depending on the model. Quick and easy extra storage.
Here’s a model I like, because being clear, it’s not too visible:
Plastic corner shower shelves pictured: Zenith Products Corner 2-Shelf Caddy