There's big duffles, and then there's modular organization - if your duffle is so big you can't load it into a vehicle you may be in trouble; if its too heavy to carry long distances you might rethink that too. But if the point is to load it into a car at most, all power to you.

Aside from some wheeled totes that are intended for dragging out of the house and deploying in our backyard, I put alot of my gear in $19.99 Eddie Bauer overnight bags with a shoulder strap - comfortable to carry or sluff for a while, but not as comfortable as a backpack. Anything I intend to carry ~more than a mile loaded I put in a Kelty MAP backpack or in a smaller Kelty day pack.

The bags contain things like a FA kit containing bulk supplies for neighborhood triage and treatment; and a sort of BOB for setting up a tent and cooking for family shelter (e.g. if we suddenly had to sleep outside, but not very far from home - backyard or school playfield deployment etc). Over time and shopping for specials I've built redundant FA bags, one for the trunk of my car and one sits at work.

I kept the boots and really wet weather gear I bought for filling sand bags and mucking out houses down on the Chehalis River in 2006-2007, really dirty work - the gear is sturdy but not often used, I washed it off and packed it in a bag in case I go to work at another flood. Its the kind of stuff you like to have if you really have to stand in pouring rain for a long time.

There's a bag with my cold weather clothing and some spares for those who don't think to have a wool cap handy to keep them warm.

The Eddie Bauer bags are inexpensive (bought at their outlet store in North Bend when they go on special for $9.99-19.99) but are good quality and multi-use: we'll occasionally empty out a kit and use it to pack for a vacation or trip. They qualify for airline carryon, and the shoulder strap and handles makes them pretty easy to hump.