I notice that my students are constantly losing their "belts." This is a PowerPoint that you can edit and print to create Recorder Licenses (like a drivers' license). Have students sign the cards and then laminate them for durability. As they complete their songs, hole punch the color!
NOTE: It is recommended to print on card-stock for durability.
TIP: If you have access, add a child's school picture to the license for even more of a "license" feel.