Make flashcards that illustrate a note on the treble or bass clef, depending on which stringed instruments your students or children play. Have two students assume playing positions. After holding up the flashcard, the first student to play that note on his instrument "wins." This type of game provides an impetus for students to develop rapid association skills for the notes they see on the page and the actual pitches on their instruments.
Create a visual diagram of the stringed instrument your students or children play. Place this diagram on a wall or board so that it is roughly at eye level for the children. Create small labels that show the names of certain parts of the instrument. Place small pieces of tape on the backs of these labels and set them face-down on a table. Have students come up to the collection of labels, pick one up and adhere it to the corresponding section of the instrument diagram. To add an element of competition, create two diagrams and have two students complete the process simultaneously, awarding a point to the first student to complete the process. This game will inspire students to learn the technical terminology for their instruments.
Sit at the piano and play a short melody or refrain. Instruct your pupils to play back the notes they have heard on their own instruments. This type of activity would work well in group situations, as it encourages critical listening abilities and group performance skills. An important element of music pedagogy is the development of a proficient "ear." This game will dramatically improve your students' listening abilities.
Clap a distinct, short rhythm and encourage your students to recreate it with their bows and open string on their instruments. This process is very similar to "Simon Says," and will create an entertaining learning tool for your students. As rhythm is an undeniably important element of music, this exercise should inspire student to develop this crucial skill.