Every time I organize a space in my home, I find myself at the dollar store spending more money on storage containers. I've realized that by doing so, I'm wasting money.
Shoe boxes, as well as many other product boxes (the red one on top is a Starbucks mug box!), are sturdy and come with a lid. They're easy to stack as most are relatively the same size and they can be decorated.
I'm constantly seeing blogs where closets are organized to the 9's with matching storage boxes and accessories. For me, that's unrealistic. With a little bit of washi tape, they work in almost every space in my home. Especially in closets and cupboards where no one other than myself sees.