Rosarito [1] offers much of the same shopping you’ll find in Tijuana [2], just on a smaller scale. There are handicrafts, furniture stores, leather shops, and art galleries.
For souvenirs, head to the Mercado de Artesanías (9 A.M.–6 P.M. daily), on the west side of Boulevard Juárez, about midway between the Quinta del Mar and Rosarito Beach Hotel. This crafts market has hundreds of vendors selling all kinds of Mexican-made arts and crafts. Shop around and bargain to get a fair price for any items you buy. For beachwear and boutique shops, browse the many shopping plazas around town.
Links:
[1] http://www.moon.com/destinations/baja-cabo/tijuana-rosarito-and-tecate/rosarito
[2] http://www.moon.com/destinations/baja-cabo/tijuana-rosarito-and-tecate/tijuana