[3][1] The same year, she created and patented a plastic earring organizer; J.C. Penney picked up the product before the holiday season, allowing her to pay off her $300,000 loan in 18 months.

[4][5] In addition to jewelry storage, she has patented consumer products in categories such as cosmetic organization, travel, electronics, and household items.

[4] After her success with J.C. Penney, Greiner expanded her company, with her products appearing on Home Shopping Network[4] and in the retail store Bed Bath & Beyond.

[8] In 2014, her investment in Scrub Daddy, a company that produces a texture-changing household sponge, was regarded as one of the biggest successes in Shark Tank history.

[9][10] Greiner's other early Shark Tank investments include Bantam Bagels (which was fully acquired by T. Marzetti Company in 2018),[11] Squatty Potty,[12] ReadeRest,[8][12] Paint Brush Cover,[12] Hold Your Haunches,[12] Drop Stop,[12] FiberFix,[12] Simply Fit Board,[4] Sleep Styler,[9] and Screenmend.