I think containers are my absolute favorite organizing tool. They come in so many shapes and sizes, and also made of different materials. I often containerize things that I use at the same time, and I try to use pretty containers for things that need to stay out for a length of time.
I use a container to keep my iron, a bottle of water, spray starch, and some cloths for cleaning the iron in a bin. It lives in my linen closet, but I just reach in and take the whole bin out when it is time to iron. And with wire shelving I don't have to worry about the spray bottles falling over! I use a plastic bin for these since they aren't left out all the time, and I am cautious to make sure that the iron is cooled down before I put it away.
I also containerize unmentionables. All ladies need a basket like this. I take it out for a week each month and leave it in our master bath. Then it goes back under the sink for 3 weeks.
Extra toilet paper in our boys bathroom is kept in a basket on the back of the toilet. I would never keep extra toilet paper on the floor next to the toilet in a boys bathroom ... and if you have boys then you know why I say that!