This Entrepreneur Pranked Mark Cuban on National Television. The Shark Was So Impressed He Offered to Invest $640,000 — in Empty Boxes. Ryan Walther, co-founder of prank gift box and gag gift company Prank-O, combined his passions for comedy and business. Previous Article Top 4 Diversified REITs for Future Success Next Article This Entrepreneur Wants to Turn Every Home Into an Urban Farm
