(Image credit: Apartment Therapy )
Pythagorean Theorem Swaddling Blanket • $38 • Uncommon Goods

I've long been a fan of Tiffany Ard's non-cutesy and decidedly nerdy Nerdy Baby line and was glad to see it expanding to some soft goods. This Pythagorean Theorem blanket might not be for everyone, but for someone it will be perfect. (Or go for the Microscope version.)