Food,necessary things for day to day activity

Towel, clothes, tooth brush, sleeping bag, diary, notebook and camera for a start.

First of all, do not forget to get a box of matches wrapped into smth waterproof (for instance, cellophane), a sharpened knife, a medicine chest, a chocolate bar (as it's the best way to still hunger). Of course, you'd take some warm clothes (especially warm socks) and, please, be sure you have got a credit card and some cash of that country you are going to. Remember the phones and address of the Embassy of your native country and leave the route-list to your friends or relatives at home fo them to know where you are going. Good Luck!