What's a simple, cheap treatment for my clavicle fracture?

Clavicle fracture: In most people with healthy bones clavicle fractures heal very well on their own. The best thing you can do to help is to use an immobilizer. The classic over-the-counter immobilizer is a figure-8 strap to hold the shoulders back and keep pressure off the clavicle during healing. This is available at any pharmacy. Other styles of immobilizers are also available.

Sling: A sling is the best nonoperative treatment for a clavicle fracture; figure of 8 braces have been shown to be less tolerated by patients and have no short or long-term advantage. They can be cumbersome and painful to put on correctly. A sling should be adjusted to fit correctly - it should support your elbow without forcing your arm/shoulder upward.