Good side hustles, like freelance writing, allow you to make money by trading your time. Since you’re trading time for money, you’re capped at how much you can make. Still, if you’re looking to hit, say an extra $1000 a month, freelance writing is a side hustle that can allow you to predict how much you can make. You can have a contract set up with a client or two that’ll allow you to know exactly how much money you’ll be able to make. The secret to succeeding as a freelancer writer is to charge based on the value you’ll bring. Most freelance writers undercharge which results in fast burnout with little pay off.
I surprisingly get a lot of people asking to detail their car. I never intend to make a business of it, but I love doing it to my cars and people ask me to do it to theirs. All it takes is a cheap orbital buffer (mines a used craftsman) and a shop vac. I normally get easily $100 for a basic wash/wax/vac, or $200 to remove scratches and polish then wax the car.