The calabash is a tropical pumpkin. Its shell is waterproof and as hard as coconut. While the flesh is only used as food in farming, the hard shell is mainly used to make practical utensils for the household and musical instruments. On Colombia's Caribbean coast, for example, "Sancocho", a kind of stew, is traditionally served from calabash bowls.
Now there are also individually handmade jewelry and accessories made of this light but very robust natural material.