Cuba may well not have a very long tradition of handicrafts, but the inflow of tourists in recent years has prompted local artisans to quickly make up for the lost time. Numerous gift shops and street markets all over the city are teeming with locally-produced handicrafts. Their most popular merchandise include woodcarvings and statues, papier-mâché masks and religious figurines, as well as simple jewelry made from shells and seeds. Also on sale are a variety of Afro-Cuban percussion instruments, such as two-headed, hourglass-shaped bata drums; paired bongos, carved African-style religious drums; and congas, the modern salsa backbone. Shékeres (gourd shakers) and claves (two wooden sticks used to play the fundamental rhythm in various Cuban genres) are also available.