What types of things do you find appropriate to share?

What are you comfortable sharing?
I understand this could change depending on the who with? variable…

Drinks?
Chapstick?
A Sandwich?

What types of things do you find it appropriate, (or inappropriate) to share?

Which people in your life would you share these things with?

I use my wife’s deodorant when I am too lazy to find mine

I’m in a fog right now, sorry if this question doesn’t make any sense

EDIT: ok, i’m talking about people who are least friends, unless some people consider sharing with total stangers acceptable