I can remember doing Treble Clef worksheets in middle school and enjoying them and my students still enjoy doing this same activity. Throughout the first 9 weeks of school I had my 5th graders work on writing their own Treble Clef Words.
Using notebook paper, I made a sample; I traced the lines of the notebook paper to create a staff and then drew a Treble Clef. When I introduced this idea to my classes, I had them write the music alphabet at the top of their papers. I found that this made it easier for them to come up with words because they could visually see the letters rather than have to think of them off the top of their heads. I demonstrated the word "Add" on my paper and how to use a bar line to separate the words on the staff.
I was quite impressed with some of the words they created; defaced, beaded. This was not something I spent a lot of time on. The papers were kept in their music folders and when we had a few extra minutes, they could work on writing a few more words.
This week was the end of the quarter, so I went through their folders and picked out some of the best work to share in the hallway. I copied the treble clef staff onto some colored paper and then slipped them into sheet protectors. (I cut the 3 whole punched part of the sleeve off.)
The reason I displayed them this way was so that I could change out the words from time to time. I wrote the name of the child at the top of the sleeve using a dry erase marker and then attached an index card to the bottom of each staff. When flipped up, the index card reveals the answer.