I had an old bouncy seat that lived through my two other boys. It looked boyish. Plus six-years-ago-ish. With a hefty dose of ugly. So I covered it:
It still has light blue buckles and frame...but one can no longer make out the random zoo animal print beneath. And now it matches my furniture.
Am I happy with the results? Meh. It's better than it used to be. I'm okay with that.