Current computing inventory

Below is my current computing inventory at home, including smartphones and tablets.

• MacBook Pro 15 inch (circa early 2007)
• MacBook Pro 15 inch (middle 2009) 
• MacBook Pro 15 inch (late 2011) 
• MacBook Pro 13 inch (early 2011) 
• Lenovo T610 (2009?) 
• Dell Latitude D400 (2007?) 
• iPhone3g 
• iPhone4 (16 gig) 
• iPhone4 (32 gig)
• iPad2 
• The new iPad (2012)

I have excluded the Apple TV, Tivo, and the Wii as computing devices.

For a 4 person household (2 adults/2 kids) - this is excessive. However, not all of the computers belong to me. Some are old computers give to me from previous employers, while others computers that have been given by my or my wife's current employer. Still, this inventory needs to be consolidated as the above list is excessive.