Late January is when clear storage boxes make the most sense to you, somewhere around the third day of staring at a pile of holiday decorations and off season clothes with nowhere to go. Closets fill up fast in older buildings, the kind with one tiny coat closet and no basement, and that's exactly when you want to see what's in a box without opening five of them first.
Measuring your space matters more than it seems like it should. Closet shelves, under bed gaps, the top of a wardrobe, they're rarely the tidy dimensions you'd hope for, so measure the actual gap before you order anything, not the shelf itself, because trim and door frames eat an inch or two you won't notice until a box won't slide in. The mistake almost everyone makes is buying one enormous size thinking fewer boxes means less clutter, and instead you end up with a box so heavy and deep you can't get it out from under the bed without unpacking half of it first. Smaller and more numerous usually serves you better than large and few, especially if you're hauling things up stairs on your own, which I have strong feelings about.
On color, clear is already doing you a favor, but the lids are where it gets interesting. Go for clear or frosted lids over colored ones if you want the whole thing to disappear visually on a shelf, and skip anything with a tint, because a smoky or amber box looks fine in isolation and then turns the inside of your closet a strange underwater color once you've got six of them stacked. Plain, uncolored, slightly frosted is the easiest thing to live with by a wide margin.
The difference between a good one and a bad one comes down to the plastic and the lid fit almost entirely. A well made box has walls thick enough that it doesn't bow when you stack three on top, and a lid that snaps down at all four corners evenly rather than one that pops open at one end the second you lift it, which I learned the hard way with a cheap set that looked identical in photos and cracked at the hinge within a month. Check the corners too, a molded seamless corner holds up to being dropped on a landing far better than one with a visible glued seam.
Where they're the wrong choice is anywhere damp, a garage with a leaky roof or a storage unit that floods occasionally, since most clear bins aren't sealed against water no matter how solid the lid feels, and for anything you want hidden rather than merely organized, because clear means visible, and visible means everyone in your apartment knows exactly how many board games you own.