Rucksacks are a great idea for Christmas if you know somebody who loves the outdoors and trekking or hiking. There are some great deals to be had in the run up to xmas as plenty of camping retailers look to get rid of their 2011 stock to make room for the new rucksacks coming in for the 2012 main camping and walking season which is in the summer.
There are lots of great brands online to choose from including Gelert, Highlander and Sprayway. Make sure to pick a bag that will suit their needs. Volume in litres is the most important aspect, you do not want to get them a rucksack which is too big nor do you want them to have to look for different rucksacks in January because the one you got them will not have enough space in it for all their equipment.
For more info on rucksacks and for some great deals get shopping online now before they all get bought up by other people!