All you need to buy is this little plastic "bead organizing" case and a magnetic adhesive sheet.
It's just a magnet sheet that is sticky on the back. All you do is measure your little case and cut out your magnet sheet to fit into it, peel off the back, and stick it inside (that's what she said). Easy peasy!!
And there you have it! You can decorate the outside to make it look all fancy n' such if you really want, but I'm not quite the crafty type so I just kept it plain and simple.
Then I just stuck in my La Femme blushes, and decided to depot a couple of different Wet n Wild shadows that I had to stick in there to make it more convenient so I would use them more.
You could use any case that you find, this actually looks just like a pencil/crayon box that you can buy at almost any store like Walmart/Target etc..
Do you have a Z-palette?
What do you like to keep inside it?