With a stove
Quick drying towel and biodegradable soap for cleanup. Easy to use some sand / gravel with water to clean most things, but proper cleaning will minimise orders that becomes more important when hiking around preditors such as bears.
Food / Water
You could need double your normal calary intake when hiking. Make sure you take enough food!
* Synthetic or wool clothing is always an interesting debate. Synthetic clothes generally wick moisture away better and dry quicker and are generally more durable. Wood has the stigma of being itchy, albeit the new ultra fine wools aren't. Wool is generally less order prone, retains warmth better when wet and is fire retartant. However, wool is much more expensive. I hedged my bets and got both for my base layer.