You have a broken chair? Then take a look at this photo for some new inspiration! A chair fixed with inner tubes. It sits very comfortably and your but doesn't get hurt, even when you sit on it for long. You don't need pillows either. If you sit on it, you feel like you're in a water-bed, up and down you go, nice and bounchy.
Just the day I got back home from my trip about a month ago, Zsuzsanna was inspiring me and many others by some simple but very creative action, fixing the broken chair by making a new base with inner tubes. Way to go. And even kitten likes it!
Here you got another example: http://www.instructables.com/id/Innertube-Chair-Seat-Caning/