How to earn extra income?

hi all,im a Information Technology lecturer in a college.is ther any way i can earn extra income in a good way not to mention quick rich scheme.im not good either approaching people to buy things from me like AVON, Cosway, insurance or anything like that and there is NO market for me to do home tuition on IT.i feel im wasteful as i have no talent in anything.but i need extra income as my son is growing.i dont have cash money for me to invest in any shares or something like that.i woudlnt say i want to be rich ...but just to earn some extra income to have some cash flow on every month.