Percussion includes instruments that are struck, scraped, stirred, shaken, or spun. While the first thing that pops into my head is a drum, the above definition covers so many instruments I cannot name them all. Consider a xylophone, tambourine, maraca, as well as any style of drum.
Here is a cute quiz with several different percussion instruments. Plus there are more electronic beats on the opposite axis. Many percussion beats are made electronically these days.
Challenge for your student: look around the house and find your own percussion sounds. Actually, it’s so fun you might want to join in. My son told me tap dance is drumming with his feet – so let those beats come out.