Answer:
It carries paper of the most important sort but also plastic, I'm glad to report. What is it?
It is something you make after you've weighed your options.
I have joy in bringing two together, but darning my existence! My life hangs by a thread, filled with ups, downs and resistance!
What goes up let's of a load and come back down
Long and thin, red within, with a nail at the end.
Cycle Cycle Cycle.
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?