How about a feat for Pathfinder inspired by some events of today and my lawnmower
You and your weapon are one, and you treat your friend better then your family. Its been with you for more then you can count, and you make sure its ready for anything.
Choose one type of weapon that does piercing or slashing damage.
Prerequisites: Proficiency with a weapon that does piercing or slashing damage and weapon focus in the selected weapon.
Benefit: If you spend an hour honing your weapons each day, you gain a +1 specialty bonus on attack and damage rolls you make using the selected weapon. If you roll a natural 1 you lose this bonus. You also lose this bonus after 24hour or if you use the weapon for any function besides as a weapon ie a sword as a leaver for a stone.
Special: You can take this feat multiple times. Its effects do not stack. Each time you take the feat, it applies to a new type of weapon.