During my lessons I have my classes split into 5 groups. Each group has a group name card which has check boxes next to the students name. Each week I check the next students name on the list and they are my ‘Leader’ for that lesson. Their job is to get any instruments or materials needed, pack up and put away things or even cast the deciding vote when doing a project!
I have enough percussion instruments in a box to cater for 1 group. When using percussion instruments with my students I will give each group a different box of instruments and these boxes are rotated clockwise around the room by the leaders of each group. My rule is that when you are the leader you get to choose which instrument is given to each student in your group (works most of the time although you can’t stop some children from trying to buck the system and complain 🙂 ) .
For positive reinforcement I award house point stickers for good behaviour, being on task and showing they are ready to learn (the school is split into 3 House Teams for sports day & points are also awarded for being good students in the classroom and around the school)