SevenSlings is offering their 3-piece gift sets for $5 + $11.95 shipping. This gift set includes a baby sling, matching baby leg warmers, and a matching mommy bracelet. Use promo code "2011" when checking out! They come in a variety of sizes, so have a measuring tape handy to find out which size you should order*!
*SevenSlings offers a $3.50 sizing insurance (looks like it covers return shipping, too) in case you want to switch it out for a different size. You can opt out of it though if you're pretty sure what size you want.