This organizer was just perfect for all my sons small dinosaurs, cars, blocks - even coloring books. I agree that it could tip over but it would take a big tug in my opinion.... I think it's important to make sure you put the trays on exactly like the instructions say... keeps the weight evenly distributed. To be safe, anchoring is a great idea but it might also depend on whether your toddler might try to climb or pull on it too.... I thought it was so great for getting organized, I ordered a 2nd one. For the larger toys, we use colored milk crates beside this organizer.