add wood wallpaper to the kick plates of the stairs. Those rolls are expensive but you would only need one. Not practical with white treads though, it will be stuffed up from black shoe soles in no time.
Bowls made of confetti! Great recycling art project--save all those leftover paper scraps (put in small bowls at each table). Collect a bunch and have the kids cut them up; Then make bowls made from confetti.
Look at the wine holder! Home-made cork board made with collected corks and old frame and used some nice big wine glasses to have corks spilling out of them, love it! It's art and a functional cork board at the same time :)