Cajamarca is known for its fine dairy products and chocolate. A visit to one of the cheese shops is worth your time. There are also several street markets along the Rio San Lucas selling farm goods, cloth and various other items.
El Quinde shopping plaza (http://elquinde.com/) offers secure parking, a super market, a large department store, movie theater, food court, electronics, clothing, pharmacies, banking, and many kiosk-type businesses. It is located about six blocks northeast of the Plaza.
There is a decent drop-off laundromat behind the San Francisco on calle Belen. 5 soles per kilo. Closed Fridays.