This Stainless Steel Insulated Square Lunch Box ($16) has a slot in | Forget Turkey Sandwiches, These Insulated Containers Mean School Lunches Can Be Served Hot | POPSUGAR Family Photo 9
Plastic Square Insulated Thermos
Amazon.com: Square Thermos Hot Food Container
Amazon.com: Square Thermos Hot Food Container
Food Thermos Lunch Box Bag Square Insulated Hot Food Tote Round Container For Children Baby Bento Small Cooler Take Away Bag - Lunch Box - AliExpress
Clean Bottle The Square Stainless-Steel Water Bottle | REI Co-op