In a science fiction fantasy, this is where people would go to socialize. But you've all used one and you might use it when you guess.

I can be fried, I can be found, In kitchens or deep in the ground. I can make you rich, or make you full, Or feed your mind with something new

I can get you across borders, but I cannot move without you. People use me to show where they come from.

Marching troops on top and below. The youngest fall out, while the sick get crowns of gold. The wisest of us get removed, imposters fill in our ranks when our comrades fall out, but even in death you can identify us.

I restrain a king, confirm the truth; am a symbol on the clothes of youth. A bank can draft me, cash me too; a single word describes what I do.