NewerTech® : Batteries : NuPower® Batteries for MacBook® 13-inch Unibody Late 2008 (Aluminum)
4GB Apple MacBook Aluminum Late 2008 Memory Upgrade MacBook5,1 612508073815 | eBay
Amazon.com: 240GB 2.5" SSD Solid State Drive for Apple MacBook (13-inch, Aluminum, Late 2008) (13-inch, Early 2009) (13-inch, Mid 2009) (13-inch, Late 2009) (13-inch, Mid 2010) : Electronics
Amazon.com: 240GB 2.5" SSD Solid State Drive for Apple MacBook (13-inch, Aluminum, Late 2008) (13-inch, Early 2009) (13-inch, Mid 2009) (13-inch, Late 2009) (13-inch, Mid 2010) : Electronics
How to Upgrade MacBook RAM (13-Inch Aluminum Unibody): EveryMac.com
Install El Capitan on MacBook Aluminium Late 2008 | MacRumors Forums
Secret Apple update for MacBooks?
A-Tech for Apple 4GB DDR3 1067MHz / 1066MHz PC3-8500 SODIMM MacBook (Late 2008 Late 2009 Mid 2010, 13 inch), MacBook Pro (Late 2008 Early/Mid 2009 Mid 2010, 13/15/17 inch) Memory RAM Module at Amazon.com