Even after 12 years, my late 2008 MacBook Pro hasn't given up. Upgraded it to 8GB of ram, added an SSD, and patched it with MacOS Catalina. Still use it everyday. :
Samsung MMCRE64GXMSP-0VA - 64GB SATA-2LIF 1.8" Solid State SSD for MacBook Air 13" Late 2008 / Early 2009 - CPU Medics
2nd 2.5'' SATA HDD SSD Hard Drive Disk DVD CD ROM Optical SuperDrive Caddy Tray Adapter for Apple Unibody MacBook/MacBook Pro 13 15 17 Early mid Late 2008 2009 2010 2011 2012.etc : Electronics
How to speed up an aging MacBook with a solid state drive | Ars Technica
Amazon.com: 1TB / 1000GB 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
120GB SSD Upgrade For Late 2008 MacBook Pro - YouTube
OWC SSD Upgrade Kits For MacBook (2008 - 2009)
Apple A1181 Early 2008 2.1Ghz 13" MacBook 4,1 MB402LL/A 2.5 Hard Drive/SSD Drive | eBay
MacBook Air 2008: 10th anniversary review flashback - CNET
For Macbook Pro 13" A1278 2008 2009 2010 2011 2012 Sata Hard Drive Ssd Hdd Cable 821-0814-a/821-1226-a/821-1480-a/821-2049-a - Computer Cables & Connectors - AliExpress
MacBook Pro SSD Upgrade - 1,00GB
MacBook Pro 15" Unibody Late 2008 and Early 2009 Hard Drive Replacement - iFixit Repair Guide
How to replace HDD/SSD in MacBook Late 2008 Aluminum | Mac Cheat Sheet
How to Upgrade MacBook Pro Hard Drive (Unibody, 2009-2012): EveryMac.com
How to Add a 2nd Hard Drive/SSD in a 15-inch MacBook Pro (Late 2008) with OWC Data Doubler - YouTube
Installing SSD (Solid State Drive) in Your MacBook Pro 13" or 15" Unibody : 24 Steps (with Pictures) - Instructables
MacBook late 2008 SSD Upgrade - YouTube
OWC SSD Upgrade Kits For MacBook Pro (2008 - 2009)
OWC SSD Upgrade Kits For MacBook Pro (2008 - 2009)
MacBook Pro 2008, Review 8 Years Later | Savjee.be
RAM upgrade and/or SSD drive – what's the benefit?
How-To: Upgrade the SSD in your MacBook Air or Retina MacBook Pro, boosting size & speed - 9to5Mac
