I'm extremely limited because of injuries, allergies, and the dire predictions of my childhood dermatologists that I would probably get skin cancer (hasn't happened yet, knock wood) in adult life because of my insanely delicate skin. Sigh. Not very manly.
I still have my barbells, but I can't use them anymore. I actually enjoyed doing reps, as long as I had a tape to watch.
In my living room, I have a stationary bike (recumbent so I don't have to further destroy my hands). Apart from that, I like nighttime walks around the neighborhood. I had to give up canyon hiking when I messed up my ankle a few years ago. Too bad--I live across the street from an awesome canyon wherein dwell many varieties of interesting and beautiful flora and fauna. On the other hand, I don't miss the industrial-strength sunscreen that I had to wear while I hiked. It always stung my eyes and made them water. And I could never wear shorts while hiking, no matter how much sunscreen I put on my legs. I get contact dermatitis and other unpleasant effects when I come in direct contact with greenery. And during "pollen season," the canyon could get unpleasant in still other ways. At the time, I thought it was all worth it because hiking is fairly strenuous exercise, and there was always something pretty to look at.
But now I am a bike-riding vampire who lurks around the neighborhood after dark. It's better than no exercise at all, and I don't have to worry about bursting into flames or instantly desiccating and exploding into charcoal-colored organic powder.