The closest full-fledged mall is in Towson, which is not very far from the Mays Chapel community. Just north of the area there is an outdoor shopping area called Hunt Valley Towne Centre with a multitude of stores and restaurants. There are many stores in Timonium itself with strip malls, and both larger and smaller stores.
I hope this helps!
Please let me know if I can help you further.
Keller Williams Excellence Realty