One other and it's been around since I was at school (many moons ago) is...
Staedtler mars technico leadholder clutch pencil 2mm 780C
Practically indestructible and under a tenner on Amazon. Lead size like a normal pencil, sharpener in the top although you'll have enough sandpaper lying around...
Maybe with HB & 2B leads
just wondered what others have used and anyone with experience of these pencils.
I have a birthday soon and of course xmas , so always being asked and started looking
I use the 0.5mm every day for general writing and it's usually fine although you do get breakages...