I hold what you’ve done though I cannot act, I steal the present but return it back; Lose me and you lose yourself

My first part's the opposite of on, My second the opposite of hot. Sometimes you can find me in an oval, Sometimes I'm led by Michael Scott.

made of plastic I may be, some will kill to get to me. With several numbers I'm inscribed, which to the public you should hide. If the link to me is broken, I become merely a token, I'll serve you well if you stay true to paying when my bill is due.

A place for your ticker; but not in your chest It holds what you love; and none of the rest More than a house; more than a place Here's where you go; when you return from the chase

You don’t want to meet me out on the green, But if you’re incisive, you’ll know what I mean. Make the cut cleanly to open a steak, and find this riddle a piece of cake.