Dandux Modular Boxes
Your review: I bought these for my grandsons' Legos, small cars, Kinex, etc. The shorter boxes fit under their bed and the taller ones fit under their 'work' table in their bedroom. The boxes are tough enough for 4 & 6 year old boys to stand on without breaking and hurting the boys. Even tho grandma says not to stand on them. They did break some cheaper boxes I bought at a 'big-box' store. These will last many years. Well worth the money.
Pros: TOUGH. Have sizes to fit under their bed.
Cons: Not 'pretty' for inside the house, but they are in a boys' room. Even my daughter-in-law is thankful for them.