My base idea is that every monument | masterpiece give a small ammount of LP for a very long time(no icilcles

One special difference that i wanted to add, is that the skill to create the masterpiece should make it quality better than it's material like: Quality = (3* Material + Skill)/4
So we could create villages that are "Museum", where we could bring our best Monuments | Masterpieces for the entire world look at it. Players would go to that village to look for the most increadible pieces of art that they could find!
Some suggestions for each skill:
Farming -> A scarecrow
Sewing -> Giant String Art
Masonry -> Sculpure
Carpentry -> A carved bear
Smithing ->Newton's cradle
Cooking -> Jack-o-Lantern
Lore -> ???
Stealth -> ???
Survival -> ???
Exploration -> A wall map