Your bathroom is probably the least populated room with furniture in your home. So it would seem to that it would also be the easiest to organise storage but you will have to battle with very little floor space, tiled walls etc
So let's deal with your shower or bath. Put your drill away! Phew!
John Lewis have a great selection of suction storage solutions.
The Bliss Lock N Roll collection at John Lewis covers all the nooks including corners!
This shower rack is wide enough for your larger bottles too!