You can’t do that trick again, because interest rates are so low now! It wouldn’t give you any real return. Instead consider a 529 College Savings Plan where all the money grows tax-free for college. No guarantees, but you do have quite a few years to keep investing, even in a market decline. Go to www.SavingforCollege.com to learn more. I invested in the Vanguard-managed 529 plan for my granddaughters, using the “age-based” plan. You’ll understand that after you do a bit of homework!