What goes up but never comes down? Age

What has many keys but can't open a single lock? Piano

What can fill a room but takes up no space? Light

What has a tail, a head, is brown, but has no legs? Penny

What has 13 hearts, but no other organs? Deck Of Cards

Lose me once, I'll come back stronger. Lose me twice, I'll leave forever. What am I? Tooth

You stare at me but I don't blush, you switch me off when you're in a rush. TV