i really like my maxpedition falcon 2. it's my edc/laptop/day hike/camelbak - mountain biking bag actually. it's a do-it-all for me.
here are the two videos i found to be really helpful:
http://www.youtube.com/watch?v=HYE-rMe5OuM
http://www.youtube.com/watch?v=A-0ctAtI2b0
at the very top compartment i keep this cookie tin container:
there's enough room there for an emergency blanket too:
next to an esee-4 for scale:
it looks stuffed but there's still room there for water purification tablets:
contents (clock-wise from left):
1. esee fire kit
2. countycomm peanut lighter
3. ~20 ft of 550 paracord
4. wet wipes
5. contact lense re-wetting drops
6. some tinder (cotton balls, wetfire, & fatwood sticks)
7. countycomm led light
8. gerber evo jr. folding knife
9. whistle
10. bic lighter
11. can opener
12. alcohol wipes
13. $20 bill and $5 worth of singles
14. cr123a battery (for my fenix pd20 flashlight)
if i'm going hiking then i bring along another small container with more stuff such as 2 compasses (one for the pack, one in my pocket), another firesteel for my pocket, fishing hooks, more paracord, dmt dia-fold sharpener, signal mirror and a 6'x8' tarp. i can easily squeeze everything i need into this bag for an overnighter but for edc i can also squeeze it flat down to about 5" high when i pull on all the compression straps.
there's also a similar thread on the w&ss sub-forum:
http://www.bladeforums.com/forums/showthread.php?t=793516