An idiophone is any musical instrument that creates the sound primarily by the instrument as a whole. Vibrating without the use of strings or membranes. The early classification of Victor-Charles Mahillon called this group of instruments autophones.
Most percussion instruments that are not drums are idiophones. Hornbostel-Sachs classifies idiophones into four main sub-categories. The first division is the struck idiophones [sometimes called concussion idiophones].
This includes most of the non-drum percussion instruments familiar in the West. They include all idiophones made to vibrate by being struck, either directly with a stick or hand like the wood block, singing bowl, steel tongue drum, triangle or marimba or indirectly, by way of a scraping or shaking motion like maracas or the flexatone. Various types of bells fall into both categories.
112.1. Shaken / rattle
112.2. Scraped / rasp
12. Plucked Lamellaphones
121.2. Jaw harps
122.2. Cut out
131. Stick Nail violin
132. Plaque Musical saw Daxophone
133. Vessel Glass harmonica