Under the bathroom sink at our home, organized in 30 minutes.
Right container is our medicine bin. Yes, this is all our medicine/first aid for the whole home. We keep one extra first aid kit in our basement, with our emergency kits.
In between we keep extra large bottles of lotion, shampoo and conditioner.
This cupboard is kept locked, so little hands never touch it.
The other side...extra set of towels, our travel kits, scale, extra TP and contact solution. This cupboard can stay open and keep our 1 year old distracted, and we can put it all back easily.
Basically, we keep all the kid oriented things under the sink, for them to use. The stool, tub toys they can grab, and the black IKEA potty (for when we start potty training)
The kids bathroom has an extra cupboard we use for laundry (and extra shampoo, soap, etc for visitors). Our laundry is at the top of the stairs in the hallway, and there is no room to keep supplies there. This works well, and is safely tucked away from little hands.
We keep all extra toilet paper out of this bathroom, since our kids love to unroll the stuff..or plug the toilet with it!
In every situation, you have to do what works for you and your family.
That is the fun of organizing, because as your family grows, things change, and you can organize all over again. I am sure one day, I will be able to put the toilet paper in this bathroom!
Here is a video on how to organize under your bathroom sink!