So, some of you are wondering just what the SINK is capable of. Here's a list!

Personalities:

Blind Diode Jefferson:
Can recalibrate the Sonic Emitter Pistol to have different sounds (and therefore, different Damage and effects).
Can't Play Music

Light Switch 01:
Can activate "Smart Lights" (upgrade required) which increases IN by 2 and Science and Repair by 5 for 12 hours. Once you have activated Smart Lights and Mood Lights at least once, you can activate either (as well as normal lights) from either Light Switch.
Can't stop loathing Light Switch 02.

Light Switch 02:
Can activate "Mood Lighting" (upgrade required) which increases CH by 2 and Speech and Barter by 5 for 12 hours. Once you have activated Smart Lights and Mood Lights at least once, you can activate either (as well as normal lights) from either Light Switch.
Can't stop loathing Light Switch 01.

Toaster:
Can convert Toasters (Both Kinds) into 3 Microfusion Cells, 5 Energy Cells, and 1 Scrap Electronics.
Can convert Cameras, Irons, and Hotplates into 3 Microfusion Cells and 5 Energy Cells (per item).
Can convert a Saturnite Fist into a Saturnite Fist Super-Heated
Can't contain his rage.

Book Chute:
Can convert a Pre-War Book (Rare Blue, Large Blue, Small Blue, Large Green, Small Green, Large Red, Small Red, Large Black and Small Black)Large Destroyed Book, Large Burned Book, Large Ruined Book, Large Scorched Book, Small Destroyed Book, Small Burned Book, Small Ruined Book or Small Scorched Book into a Blank Book.
Can convert Pencils into 5 Lead, Scrap Metal (per item) (upgrade required).
Can convert Clipboards (Normal, Earnings, Finance or Medical) into Duct Tape, Scrap Metal (upgrade required).
Can't stop being paranoid about Communists.

Muggy:
Can convert a Coffee Mug into 2 Wonderglue and 3 Empty Syringes.
Can convert a Coffee Pot into 2 Scrap Metal.
Can convert a Dinner Plate into 3 Scrap Metal.
Can convert a White Plate into 20 Lead.
Can convert a Red Plate into 50 Powder, Pistol.
Can convert a Green Plate into 10 Case, .357 Magnum and 8 Case, .44 Magnum.
Can convert a Tin Plate into 20 Case, .357 Magnum and 14 Case, .44 Magnum.
Can convert a Ceramic Dinner Plate into 20 Lead; 50 Powder, Pistol.
Can provide 50 Energy cells, 50 Microfusion cells, and 50 Electron charge packs, and 5 pieces of scrap electronics (upgrade required) once every 24 hours.
Can't stop being adorably neurotic.

Sink (Fountain, not CIU):
Can be drunk from for clean water.
Can convert a Milk Bottle, Empty Nuka-Cola Bottle, Empty Whiskey Bottle, Empty Sunset Sarsaparilla Bottle, Empty Soda Bottle or Large Whiskey Bottle into a Purified Water (upgrade required).
Can't stand germs.

Biological Research Station:
Can grow Broc Flower, Banana Yucca, Barrel Cactus, Nevada Agave, Pinto Bean, Maize, Jalapeno, Prickly Pear, Xander Root, White Horse Nettle and Honet Mesquite Plants in the individual potters (Dried Seed Packets must be found first, 3 total).
Can convert any of the above plants into "Salient Green" which can then be converted into any of the above plants.
Can't stop smooth talking.

Auto-Doc:
Can Heal you for free.
Can Reconstruct your face (upgrade required).
Can give you a hair cut (upgrade required).
Can provide implants (implant files must be found).
Can interchange Brain, Heart and Spine with cybernetic equivalents to get corresponding perks (Must complete Old World Blues).
Can respec Traits once.
Can't sleep quietly

Sink C.I.U:
Sells items (Adds a Sonic Emitter - Revelation every 3 days). Also sells mods for the L.A.E.R. and K9000 (mod files must be found first)
Repairs items to 100%.
Can disable other Sink personalities (allowing you to skip dialogue with them).
Can't address women as anything besides "sir".


Accommodations:
Queen Bed
Reloading Bench
Crafting Bench
Active Hot Plate


Storage:
1 Trunk
1 Safe
1 First Aid Box
3 Lockers (All in Bedroom)
3 Foot lockers (one in front of bed, one against wall in bedroom, one in living room under the Toaster's table)
3 Toolboxes (one next to lockers in bedroom, one next to the crafting bench, one under the plant potters next to the Biological Research Station)
2 Storage Cabinets (one above the reloading bench, one above the crafting bench)
1 Ammunition Box
1 Refrigerator
1 Nuka-Cola Vending Machine
1 Sunset Sarsaparilla Vending Machine


As you can see, the SINK is awesome. So what's your favorite feature about it?

For me, it's the easy access from anywhere thanks to the ending item.

I love having a growhouse it makes crafting a lot easier

It's awesome. I just hope i don't have to fire my companions every time I want to visit.

For functions, I like the 'Doc. Finally had the option to stop my character looking so pale she seemed to glow green around the plants in Zion... I'll try re-implanting the other body parts now.
For making me laugh, including with his ending slide when I finished, the Apocalyptic Toaster. plus he gave me my Glowing more detailed-looking Saturnite Fist.

All the rest have their charm, and its nice to chat with them if not as nice going around the crater finding their various upgrades and sub-systems.

Is this a one time thing, or can I swap them back and forth ?

the answer is no i took willow mod companion and veronica there. ran around in owb no problems. after i beat it. they dont sandbox it seems tho as i tried all they did was stand there

but one question as we are still human need to eat etc where is the bathroom?

You can switch back and forth as many times as you want.

Could someone with a xbox confirm that companions can come with you to the sink, once you've beaten the DLC. I need to know if my companion is just buggy in his reaction.

Doesn't matter what system you're on, the only way you can get core game companions into Old World Blues is through the multi-humanoid companions glitch. And even then, it might not work.

Unfortunately really, because my female courier would likely attempt to sleep with Veronica by promising her ten minutes sifting through the tech.

And Boone would likely end up fighting the toaster in a duel, with muggy as the ref.

THE DUEL THAT DETERMINED THE FUTURE OF ALL MANKIND-lol but honestly toaster>Chuck norris>everything