It's hard to think of one. I'll do one for every few years.
My Late 2007 Macbook Pro. My first laptop, used for 5 years and was amazing in it's earlier ones.
iPod Touch (4th Gen) 2010. My first portable device, changing the time I spent at my (now starting to get old) Macbook Pro. My android phone that I use now does not make this list.
My Current PC. My PC which I built. My Hackintosh featuring a Asus P8Z77-V Pro Mobo, 3570K, Corsair 650D, Intel 330 Series 120GB SSD, Seagate 1TB Barcuda, WD Green 1TB, Random Laptop Drive, Corsair HX750, No GPU yet. Having two 1080p displays was what changed things for me.
Pebble still hasn't changed things enough to make this list.