What is a shabti?
Shabties are small figurines that often look like little mummy figures. They are usually inscribed with magical spells that help them to perform various tasks in the underworld.
They basically act as servants or personal assistants to a deceased person! They were buried with that person in order to help him/her in the next life.
Like what tasks? Daily chores like a servant does?
The deceased were expected to do work in the afterlife and shabties served as stand-ins so deceased souls could relax instead of working. For example, some of the shabties were specifically designed to perform "agricultural tasks" -- that is, farming!
The English word "shabti" comes from the ancient Egyptian hieroglyphs meaning "the-one-who-replies."
Who is Shabty?
Shabty isn't actually a who, but a what. A shabty is essentially a helper mummy, a small figurine of a servant. This figurine would be buried with an individual to help them with tasks like farming in the afterlife.