I really need to take pictures of my game collection sometime... if I ever get a digital camera, I'll definitely do it. I don't have one though, so I can't do pictures, unfortunately... (I also don't have the boxes and original GB manuals here where I am now, so I couldn't post pictures of all of it anyway.) I can post a list though.
This is just what I've got now, not everything I've owned or played or something.
GB
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Hardware
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1 GB original system (grey) in good working order, w/ 2 now-dead official battery pack/AC adapter sets, and original boxes and manuals for both
(also have a Super Game Boy, though that makes it not portable)
--
Box and manual only, NO CART
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Mega Man IV
Kirby's Dream Land
Complete (box, manual, cart)
--
Bomberman GB
Donkey Kong
Donkey Kong Land
Final Fantasy Adventure
Gradius: The Interstellar Assault
Kirby's Block Ball
Kirby's Dream Land 2
Kirby's Pinball Land
Micro Machines
Micro Machines (yes, 2 copies, for link play)
Mole Mania
NBA Jam T.E.
Pokemon Red
Super Mario Land
Super Mario Land 2: Six Golden Coins
Super R.C. Pro-Am
Super R.C. Pro-Am (2 copies for link play)
Super Return of the Jedi
The Lion King
Wario Land: Super Mario Land 3
Yoshi
Cartridge only
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Aero Star
Alleyway
Bionic Commando
Gargoyle's Quest
Mega Man in Dr. Wily's Revenge
Rolan's Curse
The Legend of Zelda: Link's Awakening (I used to have the manual too, but lost it...)
Turrican
Virtual Boy
--
Hardware
--
1 VB system with visor and controller with battery pack (no stand or AC adapter)
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Box and manual only, NO CART
--
none
Complete (box, manual, cart)
--
none
Cartridge only
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Vertical Force
Virtual Boy Wario Land
GB/C (black cart (dual-mode) GB/GBC titles)
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Hardware
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1 Atomic Purple GBC system with dead screen (works, you just can't see anything...

), maybe with box, definitely with manual
--
Box and manual only, NO CART
--
none
Complete (box, manual, cart)
--
Pocket Bomberman
R-Type DX
Survival Kids
Wario Land 2
Cartridge only
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Looney Tunes
GBC (GBC Only)
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Hardware: see above
--
Box and manual only, NO CART
--
Micro Machines V3
Complete (box, manual, cart)
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Bionic Commando: Elite Forces
Heroes of Might & Magic
Kirby Tilt 'n' Tumble
Micro Machines 1&2: Twin Turbo
Project S-11
Super Mario Bros. Deluxe (the cart is broken (won't boot), but I do have it)
The Legend of Zelda: Oracle of Ages
The Legend of Zelda: Oracle of Seasons
WarLocked
Cartridge only
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Star Wars Episode I Racer
Xtreme Sports
GBA
--
Hardware
--
1 Smoky Purple original GBA with dead d-pad, making it essentially unusable, probably w/ box and manual
1 Solid Purple original GBA in good working order, loose (no box/manual)
(also have a Game Boy Player)
--
Box and manual only, NO CART
--
none
Complete (box, manual, cart)
--
Advance Wars 2: Black Hole Rising (may have lost box, but have cart and manual)
Final Fantasy Tactics Advance
Fire Emblem
Fire Emblem: The Sacred Stones
Golden Sun: The Lost Age
Lady Sia
Metroid Fusion
Motocross Maniacs Advance
Riviera: The Promised Land
Summon Night: Swordcraft Story
Summon Night: Swordcraft Story 2
Sword of Mana
The King of Fighters EX2
The Legend of Zelda (Classic NES)
The Legend of Zelda: A Link to the Past/Four Swords
Yggdra Union
Cartridge only
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Boktai
F-Zero Maximum Velocity
Golden Sun
Gradius Galaxies
Gunstar Super Heroes
Lunar Legend
Mega Man & Bass
Metroid: Zero Mission
Sabre Wulf
Wario Land 4
DS
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Hardware
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1 original model DS with third-party charger (works, for the most part, but the R button doesn't work well and the stylus tip broke off, and finding original-style styluses isn't easy... I need to do something about this.

)
--
Box and manual only, NO CARD
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Metroid Prime Hunters
Complete (box, manual, card)
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Advance Wars: Dual Strike
Castlevania: Portrait of Ruin
Children of Mana
Etrian Odyssey
Guilty Gear Dust Strikers
Lunar: Dragon Song
Magical Starsign
Mazes of Fate DS
The Legend of Zelda: Phantom Hourglass
The Rub Rabbits
Scurge:Hive
Touch Detective
Yoshi's Island DS
Card only
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none