Lights
Brass Dome Light 2x2 (POI)
CREATIVE: Requires no power and can be turned on/off when designing prefabs.
Salvage drops
Electrical Parts× 1-4
Extra parts when salvaged with a wrench, ratchet or impact driver.
Drops when destroyed
When it collapses
Falling, it leaves 
Scrap Metal Pile (75% of the time) where it lands.
Where to find (16 POIs)
The Serrano Residence (tier 3), The Zeigler Residence (tier 3), Casa Carneiro (tier 2), Don Diego Estate (tier 2), R. Thornbury Residence (tier 2), The Draycott Residence (tier 2), The Jensen Residence (tier 2), The Paciotti Residence (tier 2), Casa de Machina (tier 1), Dormer Residence (tier 1), Spark's Place (tier 1), Bruno's Boulevard, Cathedral of the Fallen, Golden Acres Farm, Marta's Hollow, Soakley Residence.
Points of interest built with this block (any of its variants), the highest tiers first, from the game's prefab files.