Things to bring

Spare gas can (unless you can comfortably cover 250 miles with one fill up)
Tire repair kit
Spare light bulbs
Chain Lube
Spare chain – optional
Toilet paper – recommend carrying in a zip lock bag, not much good if it gets
wet.
Hand sanitizer – toilettes
Water bottle(s)
PASSPORT
PROOF OF INSURANCE
Enough cash for two weeks of meals and incidentals. Meals will run
between $10 to $15 per meal, depending on how much you eat and drink.  
Also most places will take VISA but in the Yukon do not expect to be able to
use an American Express card.

Misc