Ebates ($10 free signup bonus): Shop online through their website at more than 2,000 stores like Sephora, Macy’s, and Apple. Ebates members also special discounts, promo codes, and coupons. You earn cash back with each purchase and will receive it in the form of a check or through PayPal. If it’s already cheaper to shop online, why not make it even cheaper?
People are always looking to have their cars washed and detailed. You could be a mobile car washer and detailer without having a permanent location. Reach out to people you know or make some flyers and put it in your neighbors' mailboxes. If you want to get serious about it, prop up a one-page website or give out business cards. You can make money quickly doing this.