Different Picks maybe?

[ViperZakuto]

I like the idea of gaining ores as phys level rises. Picks shouldn't be that hard to make.

Here is a few more that can be done also

Water pails- gain double or tripple the water each time you gain get water
Axes- Chop trees down faster
Shovel- either dig up 2 items each time, or more of a chance of getting tree seeds.
Pliers- double or tripple of the said item crafting. only for use with iron.