7 1/2 habits - survival style - Thang No. 2

I'd have to say the easiest habit for me is creating my own learning toolbox. I'm a fan of public transit, so I often take my tools with me on the road (books, wifi devices, mp3, sketchpad) and occassionally they open up a mobile conversation. Sometimes I take those tools off the beaten path. The hardest habit would be learning with the end in mind - although I have personal learning goals, sometimes the online tools change (or our impressions of them) in the midst of our learning.

What's relevant today is not always tomorrow, so we have to examine the "end in mind" with that toolbox. What we really need is a leatherman tool with lots of unfoldy options or maybe just one simple survival tool (like a pocket knife) that can shape multiple things. As you can tell, I'm approaching this from a camping/hiking philosophy as well. What's the library 2.0 equivalent of a leatherman or pocket knife? What tools do you want in your backpack and what can be left behind? Not sure, but I hope to find out from 23 things.