When I was younger I memorized a poem for girl scouts. It started, “Nouns are just the names of things like rice and birds and snow and rings.” It proved to be incredibly useful throughout life as it gave me a firm grasp of all of the parts of speech. I redesigned the poem to be a sort of mad libs game for students. Please note it does NOT contain all parts of speech just the parts of speech that we cover in my class. It is a nice first day activity so they can refer to it in the future when you mention any parts of speech.
In college some of my classmates didn't know parts of speech so this is useful for all levels.