don't you have any cardboard laying around at all... I would just cut up a cereal box, telephone book covers, anything... you just need to cut 2 that look like this, maybe with small centre hole, and overlap them, then loop yarn over the edges of the cardboard, from outside to inside, back over the outside etc, until it is all covered. This is the time consuming part.
If a little dreaming is dangerous, then the cure is not to dream less, but to dream more... to dream all the time! - Proust
currently recruiting for the war i am waging on time, there will be many casualties, but we will be victorious