The EZ Tag Swap by Gwen Gear San Francisco is the paw-fect little accessory for the dog with multiple collars. The simple silver ring easily and securely clips on to a collar’s D-ring and holds several ID tags and/or charms. When it’s time to switch collars, voilá, simply unclip the EZ Tag and attach it to the new collar--much faster, easier, and less frustrating than removing and reattaching each individual tag and charm. Comes with your choice of charm: Skull, Love, Peace, Paw or Bone.

$8 at gwengear.com

read more reviews at: http://www.moderndogmagazine.com/blogs/productreviews/2009/12/ez-tag-swap

Pros: easy to use, and won't break your nails!

Cons: none

My dog looks great in it :). I love that it's a clip on too. A lot easier to switch from collar to collar.

Pros: Clips on & It's stylish

Cons: none