There is one test for a kids' room system, and it has nothing to do with how it photographs. Can a child put their own things away without an adult? If the answer is no, the room will be tidy exactly as often as a parent tidies it.
Everything lives at child height
Storage above a child's shoulder line is storage for adults. Toys, books and everyday clothes belong on the lowest two shelves and in the lowest two drawers. Anything above that is for out-of-season clothing, keepsakes and backup supplies.
This one change is responsible for more successful kids' rooms than any product on the market.
Open bins beat lidded boxes, every time
Every lid, latch and zipper is an extra step, and extra steps are exactly where a four-year-old gives up and puts the blocks on the floor instead. Open bins turn cleanup into a single motion: pick up, drop in.
Save lidded containers for things that genuinely need protection, and keep those out of the daily cleanup routine.
Use fewer categories than you think you need
Adults love granular sorting. Children cannot sustain it. Six to eight broad categories is the practical ceiling: building, pretend play, art, puzzles, vehicles, figures, outdoor.
If a child has to decide whether a toy is a 'vehicle' or a 'construction vehicle', they will guess wrong, get corrected, and stop putting things away at all.
Label with pictures for pre-readers
A photograph of the bin's contents, taped to the front, does everything a word label does and works for a child who cannot yet read. Add the word underneath so the label grows with them.
Place labels on the front face of the bin at the child's eye level, not on the top where only an adult standing over it can see.
Face books forward
Spines mean nothing to a young child. A front-facing rack that shows ten covers gets read far more than a shelf holding sixty spines.
Rotate the selection every few weeks and store the rest. The books come back feeling new, and the shelf never becomes an unreadable wall.
Rotate toys instead of expanding storage
When a room is overwhelmed, the instinct is to add shelving. The better answer is usually to reduce what is available at any one time. Box up a third of the toys, store them, and swap the boxes every month or two.
Play sessions get longer and more focused, cleanup gets faster, and the toys that come back out get genuine attention.