lunch box, clothes chest
笥 centers on a container made of bamboo or similar material, used for storing items like food or clothing. The given meanings—lunch box and clothes chest—are specific types of such containers.
笥 combines 竹 (bamboo) and 司, which likely contributes a phonetic element. The character originally referred to a bamboo container or box.
The top 竹 is bamboo, and the bottom 司 looks like a sturdy box with a lid. Picture a woven bamboo lunch box or a chest for storing clothes.
For ス, imagine a bamboo lunch box so well-made that it's 'sue'-perb: sue -> ス, and the box keeps your lunch fresh.
chest of drawers; bureau; cabinet; tansu; dresser
container (esp. for food)
small-sized wardrobe
box for a shrine or temple amulet
toiletries case
goke; bowl for go-stones
tea cabinet; cupboard for tea implements
wardrobe
chest of drawers that also function as stairs