What are the "essentials" for a home gym?

Ok, sooo I was cleaning out my car today and found my gym-membership card (they switched to finger-prints and phone #'s for quicker check-ins awhile ago). I knew my membership was expiring soon, so I checked the date to see when it did, and realized it ends this Saturday!

After a short mourning...

Source: http://weight-loss.fitness.com/advanced-weight-loss/49237-what-essentials-home-gym.html

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