Minecraft featured this masterpiece by Érik Satie. Students will love this piece. This is a very simple arrangement. It allows you to use the score in any combination of instruments. There are only two parts: a melody and an accompaniment.
Try it with students mixing instruments to create different textures and you'll have a nice and interesting arranging lesson. You can also play with the form of the music: repeat some phrases, change the order, each and every time with a different combination of instruments.