I don't actually have anything borrowed at the moment. Shortly after my son was born, my sister-in-law let me borrow her wonderful swaddle blankets. I loved them so much, I bought a set to keep and returned hers.

I also like that they are safe, being 100% cotton muslin and breathable. Even though my son is past the swaddling age, he still uses them as cuddle "blankies" at night (along with his fairy frog.)