I love these for storage of frequently used items. Boxes and bins are great for medium- to long-term storage, but for things used frequently, even daily, drawers are the way to go.

I have several sets in my office for writing utensils -- each drawer has a label indicating what's inside: pencils, pens (black, blue, red, multi), highlighters, colors (pencils and crayons stored separately). I also have a couple of sets in my craft closet with circular knitting needles, crochet hooks, measuring tapes, stitch markers and the like. Having the items in drawers makes them easily accessible even with one hand.

The drawers generally slide easily. However, when stacking units, make sure not to stack something heavy on top of them. If you do, the frames will sag.