How much stuff you are supposed to fit in your bathroom? I feel there is more stuff in my bathroom than in my garage, which obviously makes no sense at all and this sometimes causes a mental breakdown.
Anyways, there are things to change which I did after looking into some of the awesome hacks, which you also will find awesome.
Using Small Baskets
Baskets are just awesome especially when you can take them anywhere with you. Use them in your bathroom to keep your things organized.

Safe Place for Electronics
Lots of people including me have to break their back reaching under the sink to locate some of the electronic items like a hair-dryer. Use a simple metal file box to store your electronics in the bathroom.

Vertical Toilet Space
There is no harm in effective utilization of unused space over the toilet. Simply install a vertical stand to hold most of your items.

Expandable Organizers Under Sink
The space under the sink where pipes are installed is often unused and can be utilized by installing shelf organizers.

Hide Toilet Paper
Use the toilet paper roll holders to hide extra toilet paper rolls next to your toilet and they will always be present when you need them. Just keep a tab on when you need to refill it.

Install a Spice Rack
A good idea is to add more space when you think there is no scope for it. By installing a spice rack you can maximize the area required to store the bottles in the bathroom.

Duo Shower Rod
Shower rods come with two metal bars which can be used both for hanging your towel and the curtains on the other rod.

Store Cotton in an Elegant Way
You might keep cotton swabs in your bathroom for an emergency and the best way to store these softies is to place them nicely in the containers.

Magnetic Strip
The metal tools need more of organization and installing a magnetic strip can be useful. But, you need to be very careful with its use.

Coat Racks Instead of Towel Rods
Towel rods normally takes more space and accommodate one or two towels only. If you have more of items then coat racks are much more beneficial.

Toothbrush Holders
We always look for fancy holders to keep our toothbrush but then it often stinks due to residue dripping in it. Using some bottle caps and Velcro, you can make awesome toothbrush holders.
Once you understand the space available inside your bathroom and how to make most out of it, you are sure to give it a well-organized look.