There are a few things that you'd be nuts to make room for in your luggage -- but you shouldn't live remote without them. Here's the skinny.
These are items you almost certainly won't be packing for your trip...not even in your checked bag. However, the quality-of-life boost they deliver is way worth the effort.
Usuall… http://www.sustainablelunacy.com/blog/5-things-not-pack/