The baby has yet to make her appearance (5/6 days till my due date!), so I've been occupying my time finishing up some projects. When I first saw this mobile , I knew I needed to make it for my baby's nursery. I sewed the birds for this project awhile back, but was a little intimidated starting the actual mobile part. The last time I made a mobile was in 9th grade science and I vaguely recall using elaborate formulas, scales, and maybe even a bunsen burner or two (okay, maybe not the bunsen burner). My group built a gum mobile and I remember, despite our elaborate calculations, still having to chew off bits of the gum to make our mobile balance properly. Several years later and without fancy formulas or a scale (or the ability to chew off bits of the birds' tails), but with a glut of cobwebs in the portion of my brain dedicated to science, I was nervous. I turned first to my geeky husband for guidance, who I thought would jump at the chance to tackle a physics puzzle wit...