After getting a good start on our NoteStars challenge, I also assigned every student the Note Categories game.
This game is very simple, but definitely challenging for students. I use one of each letter name scale block and time the student as they go through the set of student music note flashcards, placing each one below the corresponding scale block.
Like the NoteStars challenge, I started by timing the students according to each level, but they all quickly moved into using the whole deck of cards. Unlike NoteStars, students only have to identify the name of the note, so that adds a nice variety while still building an essential understanding of the music staff.