Kiara - I've just had a lovely idea for making some decoupaged furniture or storage boxes for your daughters' room - why not use pictures that she's drawn? This would be lovely with old pages from school copybooks etc. too but she's probably a bit young for that!
This is the closest thing I could find when I googled 'homework decoupage', but you get the idea...
http://fashionminute.blogspot.com/20...-homework.html
(edit:) Found another example using childrens' drawings -
http://www.flickr.com/photos/2066961...7603821975182/
http://www.flickr.com/photos/20669612@N02/2008583670/