Experience, training or licensing may be needed
You want to stick to the instrument(s) you know, but you may be a skilled enough musician to offer lessons on several different instruments, or those in a particular class, e.g., stringed or woodwind.You can decide to take on individuals or classes, depending on space and availability of instruments. Public schools are continually reducing their commitment to art and music classes for students, so you can try to work with the public school system to supplement their efforts in those areas.