529 College savings plans
529 College savings plans are typically ran by each state. There are also independent funds that you can invest in just like a normal investing account. Typically, there is an enrollment period each year when you can apply and setup your account. From that point forward you can buy credits and invest in the fund whenever you would like. The cost is typically adjusted each year due to inflation. Anyone can donate money to a 529 college plan. More on Ohio 529 Plan.