Question: How can I open a tight key ring without hurting my fingers or nails?
Option 0: Use a staple remover and push the points of the remover between the bound parts of the ring to widen enough to add or subtract a key.
Option 1: Use a staple remover and push the points of the remover between the bound parts of the ring to widen enough to add or subtract a staple.
Answer: 0