I created these for my own classroom and decided they were something others might enjoy using. I happen to think they turned out rather well! Ha! I always start off my Peter and the Wolf unit with the story and I've seen several good story products here on TPT. Find one! Then I like to explain how Prokofiev selected instruments to act out the story of PATW. So I use these matching cards for students to see the combinations and to review in subsequent lessons. I'm sure you - clever people that you are - may find other uses I haven't even though of yet. Please let me know if you do!