I hope you guys realized all that talk of dung was "tongue in cheek"(yuck!)... I don't really have a scat fetish.
People have been traveling via watercraft for longer than there have been people, well, modern humans anyway. Homo Erectus
was plying the oceans a million years ago and thusly populated the islands of Java, and possibly even Australia.
The Australian Aborigines have been in Australia for 40,000 years, that's as long as modern humans have been around. There is good evidence that they reached South America before the Asiatic peoples who are the direct ancestors of the modern Native Americans arrived.
A travois is a pretty good idea, if terrain allows. Wheels are definately a good idea, even improve terrain handling. Just like how wheel barrow is a hundredfold improvement over barrow.
I don't see a difference between gear needed for short term or long term survival, or rebuilding society for that matter. It's just a matter of using your time to improve your lot in life through the mass production of devices and inventions. Besides, there'll be plenty of crap left over after the fall of civilization. Don't you ever watch Mad Max?
If I'm gonna live somewhere, I'm gonna build a permanent shelter. If I have a permanent shelter, and a few friends, we've got the begining of a new civilization. Oh yeah, you need some weapons too.
Stone Age to Iron Age doesn't take so long for a well read modern human. Now Iron Age to Space, that takes a while. You can definately do the late 19th, early 20th century thing without too much trouble, then it all grows exponentialy from there. Unless you're in some really God-forsaken country without the most basic raw materials and recources.