Instructions
Determine into what area of collecting the items will fall. There are tin lunch boxes and plastic lunch boxes.
Find the genre of lunch boxes most appealing to the collector. The lunchboxes might include cartoon characters, television shows or musically-themed lunch kits.
Decide if the collection will be a cross-collectible item, such as a Beatles lunch box. These are appealing to Beatles fans, as well as collectors of vintage lunch boxes.
Conclude if the collection will include lunch kits that have the thermos. Vintage lunch boxes that contain their original thermos can add as much as 50% to the item's value.
Make every attempt to actually hold and handle any lunch box being considered for the collection. Look at and inspect the vintage lunch box with a discriminating eye to determine its value and possible future worth.