Since the thread over here got locked:
http://www.flyertalk.com/forum/trave...nespresso.html

I got an Inissia open box for $50 on eBay and found that this Lewis & Clark packing cube is just the right size when expanded for putting in my bag: http://amzn.to/2fBgiQq

I don't travel long enough to worry about a refillable capsule, but it's worth noting that you can buy a sleeve at a time from Amazon for about a 30% markup.