This may seem like a trivial question, but when building a PSK do you choose the items first or the container? The reason I ask is that no matter what activity I'm packing for (eg backpacking or camping trip, trip out of town, vacation, etc) I invariably stuff my pack/luggage completely full! The same applies to my FAKs & PSKs. Whatever pack I use will be filled to capacity. Often I'll toss in some extra items because, hey- I've got room!

It might seem pretty humorous to you folks, but to me it's something of a revelation: maybe I should decide what items I feel I need for the estimated level or risk, then choose a pack to accomodate said stuff. Brilliant or comically obvious?