Just a few years after his quitting his accounting job, year-old Ryan Grant is a business owner with profits in the six-figure range. This enterprising young man had the idea to turn his college side hustle into a mega-successful business. While he was a student at Winona State University, he organized textbook amazo events on campus twice a year. Not too shabby for a college kid! Getty Images Joe Raedle. A couple delling years later when Grant was growing increasingly unsatisfied in his accounting mkaes, he realized he could dalmart his old college gig — only this time, he would sell a lot more than just textbooks. At first, Grant kept his day job. Once his side business began to generate as much income as his day job, he quit his accounting job. Grant had been working out of his home, and when it became overrun with shipping boxes, he rented out a foot warehouse. His friend helped him scope out the best deals at Walmart as well as at other retailers such as Target and Toys R Us. Flic...