A few months ago I replaced my usual spiral notebook with an Acer Aspire One netbook. I'm usually out and about when I feel like jotting things down, hence the spiral notebook, but I type *whey* faster than I write. Now I can whip out an under-a-kilo dinky laptop and take notes, without having to clear off a swath of table space.
It's perfect for working with text, taking grubby webcam clips, tuning-in to Pandora, late-night ssh connections to the office -- simple stuff. Keep your MacBook Pro for the heavy stuff ... but keep it at home!
Case-Mod Tip: To dress it up, I found (after much sticky trial and error) that printing graphics on premium photo paper and then using "photo mount" spray adhesive to attach it to the case works nicely.