Met Lux Rectangle Clear Plastic Full Size Cold Food Storage Container - 6" Depth - 10 count box
IKEA 365+ Food container, square, plastic, Length: 6" Width: 6" Volume: 25 oz. Get it here! - IKEA
Amazon.com: MT Products Cake Slice Container 5" x 5" x 2.75" - Square Plastic Containers To Go - Pack of 40 Clear Hinged Containers - Medium Deep Individual Cake Slice Containers -
6 x 4-1/2 x 1-1/2 – 12 OZ - Rectangular Plastic Food Takeout Containers -