Answer:
If you drop me I'm sure to crack. But give me a smile and I'll always smile back.
A crafty use of long pieces of wool to make a scarf.
Up on high I wave away but not a word can I say.
It is something you make after you've weighed your options.
Proof you've done your time in school
I am the fountain from which no one can drink. For many I am considered a necessary link. Like gold to all I am sought for, but my continued death brings wealth for all to want more.