One last dining room chair - an Ikea KAUSTBY. This is the one I use at my computer desk at home. I'd say I got tired of sitting on an un-cushioned seat, but I pretty much never did. I got tired of stealing couch pillows to put on the seat, and then having them all butt-shaped after a couple of weeks.
While I was upholstering the dining room chairs (for the actual dining room), I went ahead and did this one, too, with a scrap of heavy drapery fabric I got from a friend in a de-stash: