I bought the fabric for a sling a long time ago and was planning to work on it this weekend. Conveniently, a great friend gave me a pattern book called Handmade Home which has a super easy pattern for it. The only change I made was to make the sling reversible. The main fabric was $2/yd at Hobby Lobby. The inside is from a duvet I tore up.
It didn't take more than an hour and a half to make altogether. Easy and fun!