A rock. Grit is in reference to sandpaper, with higher grit numbers being finer, and lower grit numbers being coarser; rocks are the lowest grit possible.
Guy finds a rock on the ground Guy: “Oh look at that, I found some 1 grit”
A Shackteau is a humble, weather-beaten, structurally questionable shelter located in a spectacular or highly coveted place—Wales, Jackson Hole, Sun Valley, Crested Butte, coastal Maine, the Alps—where the building itself may be worth almost nothing, but the dirt, view, access, and mythology make it absurdly valuable.
In use:
Shackteâu - We thought it was an abandoned shed until the realtor called it a rare alpine Shackteâu with unobstructed views and listed it for $2million.