Darkvision 120'

[Alternator]

I'm going to be playing in a mostly-underground game where I expect plenty of drow to threaten the party.  I've been scouring sources, and while it's not too hard to get Darkvision 60' (I can afford the magic item for it), I'd like to extend that to 120'.  I can spare a single feat if really required, though I'd rather do this through items.  I have a pretty good UMD score and most of my gold is still free.

Anybody have any ideas?

[Waazraath]

Darkvision
Creature types: aberration, construct, dragon, elemental, magical beast, monstrous humanoid, outsider, undead, vermin
Creature subtypes: angel, archon
Dwarf, 60'
Half-Orc, Orc, 60'
Horizon Walker 1, ecl 6 - 60' or 120'
Barbarian 5, class variant, Complete Champion, limited use, see text
Paladin 5, class variant, complete Champion, see text
Hellbred (spirit aspect), race, Fiendish Codex II, 30'+
Shadowdancer 2, ecl 9, range = normal vision

Devil's Sight, least warlock invocation, Complete Arcane, 30' also works in magical darkness
Acolyte of the Skin 1, ecl 6, 60' (120' at 5th level)
Elemental Savant 6, ecl 11, Complete Arcane, 60'
Greenstar Adept 4, ecl 9, Complete Arcane, 60'
Pale Master 3, ecl 8, Libris Mortis, 60 feet
Divine Crusader 7, ecl 14, Complete Divine, 60'
Nightcloak 2, ecl 7, Complete Divine Web Enhancement, 60', can also see through magical darkness 10'
Sun Soul Monk 8, ecl 13, City of Splendors: Waterdeep (FR), 60'
Green Star Adept 4, ecl 9, Complete Arcane
Dungeon Delver 1, ecl 8, Complete Adventurer, 60' or adds 30'
Dark Hunter 2, ecl 7, Complete Warrior, 30 feet or adds 30 feet, plus an extra 30' at level 4
Darkwood Stalker 4, ecl 9, Complete Warrior, 30 feet, 60' at level 7
Deepvision, feat, Complete Psionic, +30' while psionically focused
Sunlight Eyes, reserve feat, Complete Mage, works in magical darkness, limited duration, see text
Light and Darkness, mantle, Complete Psionic, 60' or +30', see text
Umbral Shroud, reserve feat, Complete Champion, 10' or +10'

Disciple of the Eye 3, ecl 8, Races of the Dragon, 120 feet
Dawncaller 1, ecl 7, Races of Stone, 60 feet
Deep Vision, psionic feat, Races of Stone - +30' while focused
Dragon Devotee 5, ecl 10, Races of the Dragon, 60 feet

Exorcist of the Silver Flame 3, ecl 18, Eberron Campaign Setting, 30' (60' at level 6)
Eldeen Ranger 3 (Gatekeepers), ecl 8, Eberron Campaign Setting, 60 feet or +30'
Shadow Hunter 4, ecl 8, Eberron: Dragonmarked, 60' works in magical darkness, see text
Dream of Perception, dreamtouched feat, Eberron: Secrets of Sarlona, 60'
Monocle of the Ebon Hunter, item, Eberorn: Explorer's Handbook, 60', also improves ranged attacks
Telflammar Shadowlord 1, ecl ???, FR: Unapproachable East - can also see through magical darkness
Monk 3 (Dark Moon Disciple substitution level), FR: Champions of Valor web enhancement
Night Mask Deathbringer 7, ecl 12, FR: Champions of Ruin, 60'
Shade Hunter 5, ecl 10, FR: Champions of Ruin, +60'
Drow Eyes, feat, Races of Faerun, 120', half-drow elf only
Cavestalker 3, ecl 8, Drow of the Underdark, 120' or +60'
Cavelord 2, ecl 6, FR: Underdark, 120'

Darkrunner 2, 4, 6, 8, 10/10, ecl 6, Lords of Madness, +10' each time
Fleshwarper 10, ecl 17, Lords of Madness, 60'
Inhuman Vision, aberrant feat, Lords of Madness, +5' per abberant feat
Darksight Eyes, Illithid Graft, Lords of Madness, 60'
Shadow Creature, +2 LA template, Lords of Madness - 60'
Dracolyte 7, ecl 12, Draconomicon, 60'
Hoardstealer 1, 5, 9/10, ecl 6, Draconomicon, +30' each
Initiate of the Draconic Mysteries 3, ecl 8, Draconomicon, 60'
Talon of Tiamat 8, ecl 12, Draconomicon, 60'
Incarnate 1 (Tiefling substitution level), Magic of Incarnum - also works in magical darkness, see text
Basilist Mask, soulmeld, Magic of Incarnum, 30'/essentia
Truthseeker Goggles, soulmeld, Magic of Incarnum, 60'
Amon, vestige, ecl 1, Tome of Magic
Geryon, vestige, ecl 10, Tome of Magic - range = normal vision, can see through even magical darkness
Tenebrous, vestige, ecl 7, Tome of Magic - range = normal vision, can see through even magical darkness
Shadowcaster 3, Tome of Magic - 30' (60' at level 11)
Shadowblade 7, ecl 12, Tome of Magic - range = normal vision, can see through even magical darkness
Planar Touchstone (The Unseen Path), feat, Planar Handbook - range not specified
Planar Touchstone (The Blinding Tower), feat, Planar Handbook - 60' or +30'
Dragonfire Mask, soulmeld, Dragon Magic - 60' or +30'
Fiendish Skin, fiendish graft, Fiend Folio - 60'
Dragonfire Mask, soulmeld, Dragon Magic - 60' or +30'
Draconic Senses, draconic feat, Dragon Magic, 60' only if you have 3 or more draconic feats
Eyes of the Abyss, abyssal heritor feat, Fiendish Codex I - 30' plus bonus to search and spot
Winterhaunt of Iborighu 10, ecl 15, Frostburn, 60', become an evil elemental
Devil's Sight, feat, Fiendish Codex II, 60' or +60', can also gain blindsight
Vassal of Bahamut 1, ecl 8, Book of Exalted Deeds, 120'
Ebonmar Infiltrator 9, ecl 14, Cityscape, 30'

special mention
Earth Dreamer 4, ecl 11, Races of Stone, see through any sort of earth except metal
Pierce the Darkness, divine feat, Races of Stone, temporarily double the range of your darkvision
At Home In The Deep, feat, Drow of the Underdark, see through the darkness spell

From: http://www.minmaxboards.com/index.php?topic=1412

[littha]

As noted above there are only a few ways of getting 120' darkvision. Unless you want to play as a true dragon it will be rather a struggle.

[Ithamar]

Dragonsight spell from SpC is a level 5 Sor/Wiz, personal range, lasts 1 hour / CL.  It gives you Darkvision out to 10' / CL and Blindsense out to 5' / CL.  Buy a staff with CL 12 and UMD it to give you 120' darkvision and 60' blindsense for 12 hours.

[ariasderros]

It's expensive as hell, but the Charming Eye fiendish graft out of the Fiend Folio grants unlimited range Darkvision that also pierces magical darkness too.

And, while it's only 60' Darkvision, the Dark template out of ToM is always Gouda. Especially with the fact that it is either +1 LA, or 22,500 to be permanent.

[Maat Mons]

A ring of the darkhidden (Magic Item Compendium, p122) makes you invisible to darkvision for 2,000 gp. 

[Esgath]

Maybe a few wands of Ebon Eyes (SpC, p. 77) can suffice?