General:
* Pop-up: A temporary shop or event.
* Pop-tart: A toaster pastry.
* Pop-culture: Popular culture.
* Pop-quiz: A surprise test.
* Pop-over: A type of bread.
* Pop-gun: A toy gun.
* Pop-in: A quick visit.
* Pop-out: To suddenly move out.
* Pop-eye: A bulging eye.
* Pop-bottle: A bottle with a popping top.
Music:
* Pop-music: Popular music.
* Pop-rock: A genre of music.
* Pop-star: A popular music artist.
* Pop-punk: A genre of punk rock.
Other:
* Pop-socket: A phone grip.
* Pop-corn: A type of corn.
* Pop-off: To speak angrily.
* Pop-top: A can opener.
* Pop-filter: A filter used for microphones.
Let me know if you'd like more examples!