A good European option for a foldable knife is Opinel. They are really sharp and come at a price where they are almost disposable. I carry one most of the time.

A good European option for a foldable knife is Opinel. They are really sharp and come at a price where they are almost disposable. I carry one most of the time. (Another plus is that they do not fall under weapon regulation. Make sure you know your regional rules concerning knives.)