Sign Canvas Wood 2x1
It's a sign. You write things on it.
Harvest drops
Wood× 2
Taken apart with a harvesting tool (axe, pickaxe, shovel), before perks and tool bonuses.
When it collapses
Falling, it leaves 
Wood Debris (Terrain) (75% of the time) where it lands.
Where to find (24 POIs)
Dishong Tower (tier 5), Haven Hotel (tier 5), Hybrid Mining (tier 5), Holvez Rent-a-Car (tier 4), Housing Development (tier 4), Downtown MeltDowns (tier 3), Elzner's Emporium (tier 3), Greg's Motel (tier 3), White Hill Church of God (tier 3), Congregation of Blind Faith (tier 2), McPherson UFO Museum (tier 2), Mobile Field Hospital (tier 2), Crazy Billy's Used Cars (tier 1), Mercy Point Camp (tier 1), The Smokehouse (tier 1), Booze Vault, Cathedral of the Fallen, Civic Square, Critic's Corner, Drive-Up Coffee, Eve's Garden Goodies, Quick Cup, Zillion Tower, Zip Coffee.
Points of interest built with this block (any of its variants), the highest tiers first, from the game's prefab files.