A number of people on this forum and others carry 'Ranger Bands' around their PSKs and other pieces of equipment. These are large rubber bands made from pieces of bicycle inner tube. They hold the kit together and burn well. sure they have other uses too.
If bread ties are what I think they are (thin pieces of wire covered in a strip of plastic) then, they are not often used because they are flimsy, have a tendency to break and they rust easily.
Super glue is sometimes carried, often for use on open wounds, although I've heard a lot of medical people condone this and I don't carry any myself.

Hope this helps.