floss bobbins

I recently picked up embroidery again and found a nice design idea for floss bobbins on craftster. For the people who don't know why you need such things:
Newly bought embroidery floss is wrapped up nicely but when you start using it, sooner or later it will tangle, produce knots... Wrapping it around a piece of cardboard prevents this. This design is especially nice because you can put them on a string so you'll can grab all colours that you need at once when leaving the house in a hurry. And of course they look cute...