Teaching music requires skill, but you can make money on the side just by being able to sign things -- if you become a notary public. The rules vary by state, but you can expect to pay between $100 to $500 to become a notary public and start advertising your services. The National Notary Association reported in 2017 that half of part-time notaries were averaging up to $250 per month (that's $3,000 per year), with the other half earning more.
Get-rich-quick schemes and fad weight-loss diets are naturally popular because they satisfy the id while also attending to the super-ego. The ego's job is complete when it sees something like this. The appeal of "fast'' stems from the innate desire for instant gratification, so beware of what seems too good to be true (they often are) when you're looking to make money quickly. Be wary. Listen to the conversation deep within the confines of your mind and do your best to tame the proverbial beasts.