These little things add up unbelievably, and the weight you save on the above items may amount to one additional meal, or half a day on the trail. The same holds for your standard toiletries bag. If you must have them, keep them in a small plastic bag. Keep your money with your passport. You won't do any shopping anyway.
Little things make up the weight.
On the other hand, the things you take must be functional. I take a slightly heavier T-shirt that protects me from the backpack straps and has a pocket just the size of my camera. It is advisable to pay more attention to health than I did. I didn't take first aid equipment because there were other people in the group who had it. If you travel alone, it's better to take some.