Offer Private Lessons in a Skill You're Good at

The skills I am referring to is not just soccer, basketball, cooking, swimming.  But this concept works particularly well with instruments such as guitar, clarinet, piano, or saxophone. You would get many offers for this because a private lesson from a professional musician is very expensive. Even if it’s half an hour they have to spend a lot on this. The more marketable the skill, the more you can charge.