Only need to buy once

[Jazzy]

What is a thing you only need to buy once, provided it is of proper quality?

 

[DrLeftover]

16-oz Steel Velocity Hammer

   Forged, 1-piece steel construction for strength and durability
   Rim temper reduces incidence of chipping or spalling
   Bi-material slip-resistant handle for a secure grip and comfort
   Checker face design provides nail grip
   Magnetic nail starter for 1-handed nail setting

Of course, Real quality, is NOT cheap.

 

[Bluezone777]

Nothing as everything wears out over time regardless of how well made it is. Being well made or well taken care of can only extend the life of an object not make it impervious to wear and tear.

 

[Feeblemind]

A college education...if you make something good of it.

 

[Jazzy]

Headstone or marker.