~MUST buy immediately! OnGARD Door Brace. This brace will withstand up to 1775 lbs of force. It's cheaper to buy directly from Global Security Experts, but I am having difficulty bringing up an image to pin from their site.
Make your own paracord survival bracelet. Customize it to your needs and save yourself some money. The pre-made loaded bracelets typically cost about $60, but you can buy the supplies to make about 10 or more for the same price. Update: I've swapped the regular whistle buckle to a whistle buckle with a hidden handcuff key, added reflective tape to both sides of the female end of the buckle, and added a 2" saw blade inside the bracelet. by bleu.