If I'd like to customize my Macbook a bit, I'd get this Apple Tree - Macbook Decal. Or maybe this Fuzzy Spider Descending on your Macbook - Cute Laptop Decal. So cool.
While surfing Etsy, check out these beautiful and sort of nerdy Columns of Upcycled Circuit Boards by Upcycled Jewelry. I own these Sexy Sleek Upcycled Copper Computer Board Earrings. Love them.
For real life liking (and disliking), one could use some Facebook Like & Dislike Stickers. Should get a bunch...
And if you are a social media nut like moi, see a good list of Things Companies Don’t Want to Hear about Social Media (via @Jussipekka).