Answer:
A trail, a union, together tied. Come across me and you will find you cannot change the course I'm on. Without me you cannot travel on. What am I?
A necessity to some a treasure to many I'm best enjoyed among pleasant company. Some like me hot some like me cold. Some prefer mild some like me bold.
I have an eye, but I can't see. I usually have to work with something in my eye. What am I?
My full powers come when my makers are dead. I await a heavy hat to put on my head. What am I?
I'm a kind of cup that doesn't hold water, but makes a lot of noise repeatedly. What am I?
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.