Exercise Balls as Home Decor?

Maybe it's just guilt from yesterday's gorge-fest, but we think that an exercise ball placed in the right space actually becomes an interesting sculptural object. It can serve as extra seating when needed and will strengthen your core a lot better than flopping on the couch will. What do you think? Is there a place for exercise balls outside of the gym?

Images:
1. Elle Decor/Joshua McHugh
2. Tamie and Vincent's Philly Loft
3. Siouxzi's Smooth Transition
4. Justin Styles Around His Roommates
5. Handmade Sitting Ball by Claassen & Partner