you all get this sledge hammer which allows you to move the manhole so it's mobile somewhat. Underground Hideout - puts a manhole in Bonnie Springs, you can do a quest to get the key or opt to skip it, inside it has a garden for growing food, water purifier, clean water sources mannequins, weapon and ammo sorter/storage, a teleporter and the terminal inside allow you to get delivery from the Crimson Caravan. If your on PC there's ofcause Mods, 2 that i use is The Brotherhood of Steel Safehouse which you get from doing quests for them, since i always opt to not blow them up i have no idea if you still keep it after you get rid of them. The Penthouse Suit inside the Lucky 38 Hotel and Casino provided by Mr House when you meet him, you can customize by buying stuff
