My personal opinion is that you should bring something small if anything. A gift would always be appreciated but I don't think "should" is the correct terminology. You are going to have coffee, maybe a mug from the city you first met, or seen them in, or a mug that has a cute saying about long lost friends or friends would be very sweet.
Yes, it doesn't have to be something expensive. A coffee mug that has a cap and gown.
if you knew this friend from your childhood you should find something that was special to both of you when you was a child.
if they like them
Both bring something or else it's not fair
Male or female friend?
you should bring a helmet and a spear so you can find food. you should also bring a friend so they can make you laugh because, otherwise, you will be very lonely. if you can get to eris and survive then good for you
why did dodger bring home the coffee, hotrolls and ham in the crown of his hat
Yes, you can bring your coffee on the plane with you as long as it is in a sealed container and meets the airline's liquid restrictions.
Yes, you can bring a cup of coffee on a plane as long as it is purchased after passing through security.
Yes, but it is an unusual ( not to say unheard of ) construction for the second person. It is more like a prayer or a decree: Let it be that you bring me a cup of coffee.
Yes, you can bring a coffee on a plane with you, but it must be purchased after passing through security or made with water provided by the airline.
You bring coffee into the desert and wait for people to come by, then sell it.