What kind of musical instruments can be made from gourd?

Gold: various brass instruments, percussion instruments, (such as gongs, bells, triangles, etc.) chimes, gongs

Stone: ocarinas, musical instruments

Earth: earthen pipes, flutes

Geese: various drums

Silk: the strings on the lute, so they and the flute are known as the silk and bamboo instruments

Wood: that's too much, all kinds of fiddles, erhu, bang bang. There is the xylophone

Bamboo: flute, jinghu. Hulusi, sheng

Lagenaria, is the ancient name for gourd in China, of course you can make hulusi.