UPDATE
FELT OWL MOBILE
So if you don't already know the twin's nursery is owl themed. Right now owls are all the rage so it is very easy to find cute owl stuff for nursery's...but if you don't want to spend a lot of money and still want something cute you should try this out! This is a very CHEAP and EASY project that I am certain anyone could do.
Supplies needed include: Pencil and paper (for making patterns),Various colored felt, embroidery floss, small amount of poly-fil, Scissors, Hot glue gun/glue sticks, straight pins, wooden or plastic ring, ribbon(optional).
You will have to make your own pattern but owls are pretty simple, a good trick to use is to fold the paper in half and draw only half the owl body using the crease as the middle. This ensures that it will be symmetrical. It is also a good idea to try to find images on the web to give you a better idea of what it should look like. You don't even have to do owls. Really you could do anything bears, lions, cars, rocket ships. Whatever. Once you have your patterns all cut out you can pin them right to the felt and cut out your pieces. Then you just hand stitch along the edges with your embroidery floss, stop before you make it all the way around to put some poly-fil in and then sew the rest up. Use hot glue to glue on any outside pieces like the eyes. You can wrap the wooden ring in pretty ribbon if you want. then just string all the finished pieces with the embroidery floss and tie to the ring, Use some more embroidery floss to hang.