I've considered the nails, but they have black nails and painting them would be hard due to their dark color...that and it doesn't last long at all. I'm guilty of painting my sister's Shih Tuz's nails before. lol.
I have a ton of yarn here at home (i like to crochet!) but the puppies are chewing on everything in sight! They destroyed a few heavy duty zip ties in not time at all.
So i figured some nylon collars might be best. It's not that i can't afford to buy them each a collar, i just rather not spend $8 a collar for them if i could possibly find some that where cheaper online.
Everyone's suggestions are very appreciated!