I simply printed out a large number one. I chose the font Verdana because it has a great classic number one shape. Then I cut two number ones out of card board using an exacto knife and straight edge. Then I taped the two pieces of cardboard together.
Next I started wrapping the yarn around the number. I went all one direction first and then the other direction next to cover all sides. On the final wrap, I placed a little dot of hot glue on the corners to keep then yarn in place there. And, as you can see, I wrapped the last layer in a kind of hap hazard manor to give it more of the homemade feel. But, it would look great wrapped perfectly even and straight as well.
To finish it off, I made a few rosettes and leaves with felt. These are the rosettes are showed how to make in my Yarn Wrapped Wreath DIY video.
It could be cute to do the birthday child's initials as well for a party. Don't you just love custom decor that costs pennies?