This is so beautiful and expensive looking that I still can't believe it's made from egg cartons. I found the tutorial on Better Homes and Gardens craft page. You could play around with different colours and if you don't have a mirror, you could use it around your picture frames.
I love this idea for an egg cup from Red Ted Art which is such a funny little idea for reusing your egg cartons. Might even think about making a duck one for your duck eggs!
This is a great gift idea of a herb garden in a box from Randi of Swoon. Easy to do and a gift that someone could have and use for years after you give it to them. I also love how she's packaged the gift. Who would have thought an egg carton could look so pretty?
I love these fairy light covers and that they completely don't look like they are made from an egg carton. Great idea for a gift too! The tutorial is not in english but the photos are pretty self explanatory.
I hope these ideas have given you some inspiration and get the brain cogs turning. As usual please send me pics of any projects you try via firstname.lastname@example.org or twitter @Tiddlybobs and I'll feature them on the blog.