What hardware brands do you own?

Motherboard - Gygabyte (never again)
VGA- Asus (never again) - Amd
Cpu - intel

Power Supply - Corsair
SSD - Samsung
HDD - Seagate
Motherboard - Asus
GPU - Gigabyte (Nvidia)
CPU - Intel
Water cooling - Corsair
Tower - CM Storm Enforcer

PC case - LDC
CPU - Intel i3
PSU - FSP
MB - Gigabyte
VGA - Asus HD 4870
Monitor - Benq
Mouse and Keyboard - Logitech
Mobile Phone - LG P880

Hmm:
Keyboards: Filco IBM Steelseries Tipro Cherry Corp Acer Dell
Displays: Lenovo Sony LG Acer
Cases: Fractal Desing Antec
PSU: Antec Corsair
HDD: Western Digital Seagate
CPU: Intel AMD
Memories: A-Data
Mobo: Asus
Laptop: Asus
Mice: Razer
Phone: Huawei
E-Reader: Sony
NAS: Buffalo
External HDD: Buffalo
USB-memories: No ideas...

CPU: Intel Xeon
Mobo: AsRock
Memory. GS.kill
GPU: Nvidia Inno3D
SSD: SanDisk
PSU: Corsair
Case Fractal Desing
Mouse: Razer

Motherboard - Gigabyte

CPU - Intel

Graphics Card - nVidia

Power Supply - ???

2 HDDs - Seagate

Case - Cooler Master

Keyboard, Mouse, Gamepad and headphones - Logitech

Monitor - ASUS

CPU - Intel

GPU - Nvidia
Motherboard - AsRock

RAM - G.Skill

PSU - Corsair

HDD - WD

SSD - Crucial

Case/Cooler - Cooler Master

Headset - Plantronics

Keyboard - Generic

Mouse - Steelseries

PS3/PSP - Sony

Itouch - Apple

Laptop - HP

Samsung laptop, Logitech mouse, Sennheiser headphones, Samsung phone, Iomega external HDD

On my desks: PC CPU and GFX - AMD, Keyboard - Logitech, Headset - Astro A40, Video Capture - Elgato (great capture card!), Xbox 360, PS3 (and Wii in the Cupboard lol), two LG monitors, Android tablet and phone.

Monitors/Laptop: HP

Processor: AMD

GPU: AMD

RAM: Corsair

Mice: HP

Headphones/Headset: Sony/Turtle Beaches

Ipod: Apple

Tablet:Wacom

WD Portable Hard Drive

Monitor - 23" Samsung LED

MOBO - ASUS Crosshair V Formula

CPU - AMD FX8150

GPU - NVIDIA GeForce GTX 570

RAM - Corsair Vengeance Red 16GB

PSU - OCZ ModXStream Pro 700W

HDD - WD Caviar Black 1TB

Case - CM HAF 922

Cooler - Corsair H100i

Headset - Sony MDR-XB500

Speaker - Edifier X3

Keyboard - Logitech K200

Mouse - Razer DeathAdder

Tablet - Wacom Bamboo

PS2,PS3,PSP,Mp3,Mp4 - Sony

Iphone 4 - Apple

Laptop - Dell

External HDD - Buffalo

this is gonna be long.
Mobo: Gigabyte
CPU: Intel 930
Video: 580GTX ASUS
Monitor: ASUS 21.5" FHD
Keyboard: Logitech G110
Mouse: Razer Deathhadder
Memory: ADATA 18GB
SSD: 120GB ADATA
HDD: 7 2TB SEAGATE
EXT HDD: 2 500GB WD HDD
AUDIO: ASUS XONAR X2
Console: PS2, PS3, XBOX360, WII, GAMECUBE & Dreamcast
Handhelds: 1 Gameboy Advance, 1 NDS Classic, 2 NDS LITE, 1 3DS, 1 PSP, 1 PS VITA
MP3: Creative Zen Vision M 30GB
Cellphone: Samsung Galaxy S2
TV: 59" Plasma Samsung 3D FULL HD
AUDIO: ONKYO HD 7.1
Laptop: 1 Gateway 1 HP
E-reader: Amazon Kindle Touch
Headphones: Sennheiser EH350
Camera: Panasonic FZ38

MB - MSI, CPU - AMD, GPU - nVidia, RAM - A-Data, HDD1 - WD, HDD2 - Seagate, Monitor - Asus, Case - Lynx, PSU - Fortron, Headphones - Panasonic, Keyboard - Labtec, Mouse - A4 Tech

Probably all of them, I'm something of a hoarder.

Stuff what I can see from here without moving:
GNR
DGM
Compaq
HTC
Microsoft
Logitech
Toshiba
Hitatchi
Aiwa
Netgear
Mercury
Ace
Medion
Logitech
Kenwood
Samsung

Some of the stuff I know is in running PCs
Gigabyte
MSI
Asus
Technistar
Packard Bell
OCZ
Aerocool
NZXT ^Both Fan/Temp controllers

That'll do..

Primary Monitor: Fujitsu computers Siemens. (I think)
Second Monitor: Medion (these really aren't great, I'm going to buy 2 new monitors soon! :))

Sound system: Logitech X-530 5.1 surround set

Graphics Card: Nvidia GTX 470

CPU: Intel core i7 920 @2,67

Mobo: Asus P6T SE

Primary hard disk: OCZ SSD Vertex 4 256 GB
Secondairy hard Disk: Western Digital 2TB

Case: Antec P183

Headset: Microsoft (Not being used.)

Keyboard: Logitech G110

Mouse: Logitech Performance MX

:)

ASUS Monitors

Corsair Case and CPU CWL

MSI mobo Graphics card

Ducky Keyboard

AMD cpu and gfx

Keyboard: Thermaltake

Mouse: Sharkoon

CPU: Intel

GPU: AMD

HDD: Samsung

Mobo: MSI

Monitor: Asus

Headset: Creative

Crap, that's a moment of thinking...

Mobile phones: HTC and LG in reserve.
Xbox: Microsoft with a Seagate harddrive.
Screen: Samsung.
Motherboards: Currently MSI, but DFI in reserve and a little project on an Asrock board.
Harddrives: Samsung, Fujitsu, others and soon a Seagate.
Laptop: Acer.
Graphics cars: XFX, Club3D, MSI, soon a Sapphire.
Processors: AMD.
Power supplies: Corsair and some of which I don't even recall the name.
Memory: OCZ, Kingston and G.Skill, soon also Corsair.
Input devices: Logitech mouses, Logitech keyboard, noname keyboard, Sweex keyboard, Thrust wireless keyboard/trackpad.
Headset: in-ear: Beats (received with my phone), Sennheiser, over-ear: Logitech headset.
Mediaplayer: Archos.
Router: Linksys.
HDD dock: Sharkoon.
USB thumbdrives: SanDisk and Freecom.

all kind of brands

microwave moulinex

AMD - CPU and GPU (Sapphire)

GoodRam - RAM

ASRock - motherboard

Fortron - power supply

Cooler Master - case

Belinea - screen

CM Storm - mouse

Zalman - CPU cooler

Brother - printer

Seagate - HDD

Lite-On - DVD

Samsung - radio/speakers, phone

Panasonic - headphones

Toshiba TV + Sony PS3

CPU: AMD
GPU: Sapphire / AMD
Motherboard: MSI
Monitor: Dell
RAM: Kingston
SSD: Crucial
HD: Western Digital
Power Supply: Enermax
Mouse & Keyboard: Logitech
Speakers: Trust
Router: Netgear
Case: Cooler Master

Motherboard - ASrocks
GPU - GTX 550ti
CPU - Intel
2 TB HDD
12GB Ram
Full Water Cooling
K-Scorpion Gaming Mouse
Standard Keyboard
42" Phillips LCD TV/Monitor + 2 15" LCD Monitors
Megatron JL-68 Gaming Series Case

Xbox 360 slim 250GB Model
Sony PS3 120GB Slim Model
Sony PSP
Nintendo Wii/64/DS

Asus EeePC Series Netbook
Intel / 1GB Ram / 60GB HDD

Acer Aspire Ultrabook Laptop
Intel i3 / 8 GB Ram / 1TB HDD / Intel HD Graphics 3000 /15.6 HD Screen

iPhone 5 + Samsung Galaxy S2
iPod Touch 4G

Nikon D3100, D7100 and D300 DSLR Cameras
Stigma, tamron, nikkor Lenses 18-1500mm focal reach total.

Side items:- SNES, commadore 64, gamecube, PSX/1, PS2, Crystal Xbox, Gameboy colour/advance/SP

ermmmmmmmm..... I think that's about all I can think about currently.

CPU: AMD

GPU: NVIDIA

MONITOR: PHILIPS

MODEM: ASUS

SPEAKERS: LOGITECH

MOTHERBOARD: GIGABYTE

PHONE: SAMSUNG GALAXY S3 + TRYING TO SELL MY IPHONE 4

Monitor - Samsung
Keyboard - Microsoft
Mouse - Logitech
Phone - Samsung
Cpu - Intel
Mobo - Asrock
GPU - Nvidia/MSI
HDD - WD+Seagate
Headphones - JVC
Speakers - Altec

var. Amazon basics cables. HDMI/USB.
No consoles/gaming devices in use.

I'm sorry, but I had to