Hook: Floor Small (Green Square)The Minefield Marker decoration fits into a small green square floor hook.
Hook: Floor Medium Narrow (Blue Rectangle)The Minefield Marker decoration fits into a narrow blue medium rectangle floor hook.
How to Get a Minefield Marker Decoration
Cartel Pack Decorations
The Minefield Marker decoration can be dropped from Constable's Stronghold Packs, which were released on the Cartel Market and bought with Cartel Coins. Cartel Packs, including the Constable's Stronghold Pack, include a random selection of items from the Constable's Stronghold collection of items. You aren't guaranteed to get a Minefield Marker decoration from a Constable's Stronghold Pack, but it is one of the few ways to get a Minefield Marker deco apart from buying it on the GTN from another player.
If you're looking to get a Minefield Marker, the easiest way to get it is to head to the Galactic Trade Network (GTN) in SWTOR and buy it with credits from another player. If it's very rare and not available on the Cartel Market, you could try buying from the GTN and hope you get it.
Contributors: Thank you Danata [Jung Ma] for allowing his Stronghold items to be shared!