Lights
Black Light Bulb Flush Mount 2x2
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
Iron× 5
When it collapses
Falling, it leaves 
Scrap Metal Pile (75% of the time) where it lands.
Where to find (6 POIs)
Haven Hotel (tier 5), Congregation of Blind Faith (tier 2), Fun-Gi Daycare (tier 2), Bob's Cafe (tier 1), The Tackle Box, Tragedy Trailer.
Points of interest built with this block (any of its variants), the highest tiers first, from the game's prefab files.