Interor notes for the Chagrinspire Gigadungeon

Most living floors have 5 huge domes and multiple sub and over service levels. There are other secret, smaller habitats between domes. So far, players have found a prehistoric living gnome city in the deep by train, but have yet to find levels in Chagrinspire occupied by bustling arcane decopunk gnome civilisation.

This is a bunch of oddments for inter-level or inter-dome travel

Habitat sections often have checkpoints or solid barriers or secret passages to wild areas
Feral areas powered transit may be powerless, shut down and locked

Small species like gnomes can double their occupation in vehicles or a living space
They can squeeze in more for longer than humans could cope

d12 Keys
1 Apartment
2 Workplace
3 Lavatory
4 Vehichle
5 Janitorial
6 Locker
7 Toolbox
8 Elevator
9 Service door
10 Section Gate
11 Security master key
12 Teleporter key

d12 keys limits limited
1 Only one level
2-3 Only one lv to one other
4-6 Lv 1-5
7-9 Lv 6-10
10-11 Lv 11-15
12 Above Lv 15

d12 Intersection Best Local Transit Choices
1 Walkway or scooter track, may be elevated over buildings in dome

2 Escalators or Stairs, may be elevated over buildings in dome

3 Elevators 

4 Trolleyway for scooters, golf carts and gnome buggies, possibly with trailers
d4 1=cargo 2=tools 3=passengers 4=machinery

5 Roadway for autogolem cars, vans, trucks, buses. May be elevated over buildings in dome

6 Canal barges, mostly for freight, but some have crews or passengers to waterworks

7 Cable car or monorail, pass through upper domes

8 Light rail trams or trolley cars, drive in streets or through tunnels to workplaces

9 Automated freight rail some for trunks or full size golem trains

10 Railway station may be elevated above streets 

11 Light aircraft with tunnels connecting domes and outside and huge hangers 

12 Teleporter pad for VIP to important places

There are also dumbwaiters, pneumatic message tube systems, telegrams and telephones (and videophones for the elite with huge B&W tube screens. So messages and possibly some transport for very tiny people. Some shafts have emergency parachutes for gnomes. Secret doors are common for secret police and maintenance.

d12 Elevator Types
1 Dumbwaiter for goods or 2 crouched gnomes
2 Industrial manlift, a conveyor belt with box to stand in continually moving
2 Personal elevator, round or square column with glass or cage
3 Small elevator with folding cage door for 4-6 persons
4 Small elevator with sliding metal doors for 4-6 persons
5 Small elevator with folding cage door for 8 persons
6 Medeum elevator with sliding metal doors for 8 persons
7 Glass elevator for 4-6 persons with visible superstructure and sweeping views inside domes
8 Glass elevator for 12 with visible superstructure and sweeping views inside domes
9 Freight elevator with pull-down gate for 12 persons or several trollies or a forklift
10 Freight elevator with pull-down gate for 12 persons or an automobile
11 Heavy-duty freight elevator fits 20 workers or two typical goods trucks

12 Industrial elevator for 100 workers or 4 large trucks or buses or a train carriage

Some industrial ones might rise up at an angle of even 45 degrees

d12 Elevator Hazards in Abandoned Areas
1 Locked
2 Door seized up
3 Shaft blocked by debris
4 Power cut from the inside shaft

5 Car no longer held up safely and may fall

6 Panel damaged needs repairs to work blind

7 Flickering lighting or goes out when moving

8 Rattles and shudders

9 Drops a few floors, might stop between levels

10 In use by humanoids currently

11 Monsters lair in a car or a shaft (trapdoor in the roof might be open)

12 Drops into a secret police station or prison

d12 Elevator Enemies in Abandoned Areas
1 Adventurers
2 Ghouls
3 Undead soldiers
4 Kobold scavengers
5 Gnome looter explorer
6 Mutant scavengers
7 Abhuman beast folk barbarians 

8 Doppelgangers

9 Spectral operator in uniform

10 Clone human or orc soldiers
11 Automaton or Death guarf flesh golem
12 Gnome soldiers or police death squad

d12 Elevators Denizens in Populated Areas
1 Operator, gnome or human clone in uniform
2 Working gnomes in uniform with tools or lunchboxes
3 Gnomes in nice clothes shopping
4 Gnome manager with enterprise
5 Automatons, often servants like nannies or butlers
6 Gnome administrators with briefcases and newspapers
7 Children with a teacher on an excursion
8 Cleaners with trollies
9 Delivery d4 1=telegram 2=food 3=parcel 4=letters 

10 Gang of delinquents who sass other passengers
11 Magicians on the way to a conference or project
12 Secret police squad  or soldiers with fighting automatons

d12 Elevator Horrors That Lair in Elevator
1 Swarm or giant rats
2 Swarm or giant bugs
3 Giant Spider or scorpion
4 Swarm or giant bats
5 Giant crab
6 Rust monster
7 Bear-owl or hook hand 
8 Mummy or wraith or wight
9 Cave fisher or Mi-Go
10 Mimic or shoggoth
11 Elemental
12 Demon or devil

d12 Rooftops
1 Watertower for fire control
2 Plant room for elevator or air conditioning
3 Bat House
4 Sheds for a mushroom garden
5 Hermit shack
6 Smoke stack
7 Stairwell

8 Advertisement billboard or neon sign

9 Monster pen

10 Magical antenna tower

11 Landing pad for a flyer

12 Secret police observation post or sniper hide

d12 Mega structures Between Domes

1 Plant for water with huge water pipes and possibly canals  or air

2 Plant for air with huge vents and shafts, bad air sent coreward

3 Factory or industrial facility

4 Refinery for alchemical materials

5 Apartments for workers

6 Shopping mall

7 Stadium

8 School

9 Fungus garden
10 Menagerie of exotic creatures for alchemy and magic

11 Thinktank bunker for magic research

12 Secret Police bunker ot prison

d12 Black Lab Thinktank Bunker Projects
1 Necromancy - undead research and interrogation
2 Summoning - summon and bindings to make magic machines
3 Automaton & golems
4 Arcane spell research
5 Wizard School
6 Mentalist School
7 Druidic school for monster breeding
8 Clone factory makes d4 1=orcs 2=humans 3=abhumans 4=death guard flesh golems
9 Potion factory
10 Divination centre
11 Temple complex to exploit a god of the outer darkness
12 God prison for magical power generation

d20 Advertisements
1 Lotus Cigarettes
2 Marshweed Pipe Tobacco
3 Acorn Cola
4 Alchemists gruel in a can
5 Beauty marks (stick-on warts and moles)

6 Hair removal creame
7 Mushrooms!
8 Mushroom Beer or Grog
9 Gloom Gum, takes away the pain of living
10 Cripy Fungi Flakes keep your bowels clean
11 Negamite yeast extract spread with added salt
12 Blacks' Stodge is good for you, so eat it
13 Black Sphere World News, we make the news
14 The world won't destroy itself, it needs your help!
15 Safety is something we consider
16 Beware peace talkers who want compromise
17 Stay Calm! Take your pills!
18 Beware enemy spies!
19 Join the black sphere war ministry
20 Nullism is Eternal Peace

Posters, stickers, vehichle signage, neon lights, billboards all possible