A company called "coyote vest" is selling "pet body amour.
Do you walk your dog in areas where there are coyotes or hawks? Are you worried about taking your small dog to the dog park or the beach, where there are so many incidents of larger dogs injuring or killing smaller dogs? Do you own a larger dog that won't stop picking on your smaller dog? If you answered yes to any of these questions, then your small dog needs CoyoteVest™ body armor.
What you need to do is put your dog on a leash and get some off-leash control of your dogs.
I'm not sure there is a real market for these things. Are there really that many paranoid poodle owners and attention-whores at the dog park? I guess we'll see!
That said, in the name of ridiculousness, I am thinking Moxie and Misto could rock the world with these spike collars.