Make your own Paracord Bracelets! These buckles have a custom molded whistle for emergency signaling. $2.76 for a 5 Pack. There are plenty of videos on YouTube showing you how to make your own. Buckles come in BLACK only and they are the 5/8″ size. They are made from plastic and are a really nice quality buckle.
This makes a great family project or a super cheap gift!