I prepare this tutorial for sewing mail box for playing. Sewing the round box with zipper is not a rocket science and everybody know how to do it.
For me it was more interesting how to make your very unique Mixed Media Fabric. OK, it is a little bit artish, but it is fun to do it, and most part of it you could do it together with your child.
The technic is useful for a lots of different art project, so maybe you will like it.
If somebody is interested, how I got this idea, you could read on my Bludor Magazine. All the coments are very welcome.