In The Enchantress Returns, Mother Goose brings her basket to Alex and Conner's home when she has "guard duty". It is very heavy and is enchanted to be able to fit many large items inside, such as a rocking chair. She also keeps her thermos with "bubbly" in the basket.
Trivia : nod to Mary Poppins?
The description of Mother Goose reaching inside the basket with her entire arm is reminiscent of the iconic scene in Mary Poppins, where she retrieves various large items, including a chamber lamp, a mirror and a plant, out of her purse.