Artist and Mid-Century Modern fan Jenn Ski has moved from two dimensions (remember her alphabet cards?) to three with these affordable, colorful, wood mobiles. They're not a bit babyish so could have a long life in your home after your baby has outgrown mobiles.
One nice feature is that the mobile is adjustable - move each piece up and down the string as you like. You can find them ($35) in Jenn's Etsy shop. We also like her print (above) if you wanted to echo the look of the mobile on your walls.