We love pencils. There's a simplicity to them that nothing else can beat. 'Lead', wrapped in wood. There's no mechanism to jam. There's no ink to flow to slowly. If you can see the tip, it's going to work. Dependable.
There are problems, though. They need keeping sharp, and the tips can be broken when you're carrying them. And when they are sharp, you might need to protect yourself from the pencil!
Fortunately, there are many accessories to help. Pencil extenders that can protect the tips when you travel, and extend short stubs to use the whole pencil. The wonderful Faber-Castell Perfect Pencil range even add hidden sharpeners so you can maintain that point on the go. There are grips to make holding pencils easier, as standard pencils are too slim to be comfortable for some people.