Go for a walk.
Sit outside with some iced tea and read a book.
Pick out some clothes from your closet that don’t make you happy but have been hanging in there for weeks/months/years, fold them back up nicely and donate them to charity.
Go to bed early because sleep is important? 😉
Jump rope! It’s fun, it’s easy, and kids really enjoy it too. Everyone can do it! I personally love jumping on the double headed ones where you turn around to jump over the ropes (you just need one jump rope!). It’s great if you want some acrobatics or groups of people to play with too – all age groups find jumping rope fun! The only problem is that you probably don’t have one in your closet waiting to be worn or put on display so it might require a trip to the store.