Folding Saw vs Hand Chainsaw
In some places I think its perfectly fine to have a campfire, but in other places, like alpine areas, its not OK. If you are winter camping a campfire is pretty important, for warmth and for entertainment. Especially for winter camping, you will need to cut some wood for the fire. A folding saw like the Sven saw below is an example of one type of folding saw, and with it you can effortlessly cut logs up to 8" thick. It doesn't tire you out, it folds to a compact size, and is very light weight.
Below that is another type of saw, a pocket chainsaw. These things are useless. To cut wood you have to step on the wood and pull up against your leg pressure. This will kill your back and hands. You can cut one log of 6", and after that you’ll be soaked with sweat and your back and hands will be screaming and you will not cut another one. It is exhausting, and not useful, especially considering the weight.