Vegans of .fr, .de and .it, what are your favorite snacks?

I'm visiting Germany, Italy and France over the next few weeks. I won't have access to a kitchen most of the time, but I am going to want snacks. It has taken me a lot of time to find my favorite snacks in my home country, and I won't have that much time in each country to try all of your delicious and less delicious offerings.

So:

• What's your favorite snacks, fit for a movie night, a long train ride, a low effort lunch or a hike?
• What's the name of the store that usually sell these snacks?
• Any other advice you have for a vegan visitor to your country?