Answer:
You can carry it everywhere you go, and it does not get heavy. What is it?
These are the bumpy parts of your digits
Touch this and you'll regret it. But if it's cold, you won't forget it. What is it?
A tasty reward given to well behaved dogs and kids
I am million people's wakeup call. What am I?
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.