Getting older has its privileges! Most states have special pass rates into their parks and recreational areas for seniors, but you might have to ask to find out. There may also be bus passes or tickets to seasonal events that are discounted for senior citizens. Sometimes these things are not well advertised, so ask!
Don't forget about these possible discounts for senior citizens and if you don't think you're "senior" quite yet, ask anyway. Sometimes the discounts start at age 50.