Amazon.com: Plastic Trays for Classroom, Office Organizing, Arts & Crafts - Letter & Papers Flat Storage Bins - Sensory Tray - Set of 4 Colors - Great for Lego, Sand, Crafts, Orbeez, Painting, Montessori Tray
Amazon.com : Storex Letter Size Flat Storage Tray – Organizer Bin for Classroom, Office and Home, Assorted Colors, 5-Pack (62514E05C) : Office Products