Toilet paper is a wonderful thing to carry backcountry. Many may disagree, but I consider it a wonderful luxury. To the further horror of ultralighters, I also keep the cardboard tube in the center! It has been a excellent fire starter more than once. TP doesn't start fires worth a damn, especially if it's damp out.

Now TP is all wonderful and good, but for true back country luxury I take diaper wipes. Nothing short of a bath works better at removing sweat and stink, priceless if you get the trots, cleans your hands before eating, and disposable in a firepit.

Finally nothing is better on a mildly sunny day then getting to camp, soaking your hot feet in the river and then scrubbing them with a wipe and putting on dry wool socks. Ahhhhh.

As for weight, I take 2-3 per day. They weigh about 120g for 20-25 plus a ziplock bag, so 3-4 grams each. Cut out a granola bar for every week of wipes and your good. Or a pair of socks, since your feet are being cleaned each night.

Finally, because I like it; what your toilet paper says about you: