I teach in Canada and hubby works in the US. The end result? Lots of back and forth travel on weekends and holidays. Oh how I wish I had seen this New York Times slideshow ages ago!!! I would have saved a lot of money on baggage fees and perhaps even traveled a bit lighter.
Anyhow, now that I have seen it, bookmarked it and have blogged here about it, I will forever reference it when packing for a trip. Click the link and be amazed at how much stuff can be packed into a carry-on.