List of computer hardware (Essential & Optional)

Can anyone help me with 'A complete List of computer hardware (Essential & Optional)' I am building my first Computer [its not my first computer but first build] and i can shed money according to what is necessary to me. So i'm not 100% sure if i know every computer hardware component or its possible that i can forget something. So i want to write down the list of hardware which i will require. Thanks!

List of Essential Hardware components :

Motherboard
Processor
RAM
Power Supply
Hard Disk
DVD-RW
Monitor
Keyboard
Mouse

Optional hardware list :

Graphics Card [generally exists onboard][PCIe or AGP]
Sound Card [generally exists onboard]
LAN Card [generally exists onboard]
Bluetooth Dongle
TV Tuner Card
Media Center HT sysetm with remote
WebCam
Head Phone
Multi-Card Reader
Flash Drives
External / Portable Hard disks

Apart from these, under the optional components :
Game Controllers [joystick, gamepad, steering wheel and additional devices like skateboard, bike for virtual reality gaming]. :thumbup1:

Add these in optional :
Printers
Scanners
FingerPrint Reader
Floppy Drivers [Outdated]
Blu-Ray Writer
Speakers or Audio system

For price list of different hardware see the pages below. Some Might be old so go with the new price lists :
http://forums.techarena.in/monitor-v...rds/971992.htm
http://forums.techarena.in/monitor-v...ds/1154069.htm
http://forums.techarena.in/motherboa...am/1087716.htm
http://forums.techarena.in/hardware-...ls/1087798.htm
http://forums.techarena.in/hardware-...ls/1076848.htm
http://forums.techarena.in/hardware-...ls/1169062.htm
http://forums.techarena.in/monitor-v...ds/1076827.htm
http://forums.techarena.in/motherboa...am/1064645.htm
http://forums.techarena.in/motherboa...am/1076623.htm
http://forums.techarena.in/motherboa...ram/756095.htm
http://forums.techarena.in/hardware-...ls/1087816.htm
http://forums.techarena.in/hardware-...ls/1096799.htm
http://forums.techarena.in/motherboa...am/1108542.htm
http://forums.techarena.in/motherboa...am/1106377.htm
http://forums.techarena.in/motherboa...am/1052386.htm
http://forums.techarena.in/portable-devices/1098861.htm
http://forums.techarena.in/hardware-...als/677581.htm
http://forums.techarena.in/hardware-...als/674726.htm
http://forums.techarena.in/motherboa...-ram/23579.htm

http://forums.techarena.in/hardware-...rals/24331.htm

http://forums.techarena.in/hardware-...rals/48915.htm

http://forums.techarena.in/portable-devices/643322.htm