Answer:
Gets rid of bad ones, short and tall. Tightens when used, one size fits all.
You must keep this thing. Its loss will affect your brothers. For once yours is lost, it will soon be lost by others.
I'm the source of all emotion, but I'm caged in a white prison.
Just head and foot yet never tires of dancing.
Double my number, I'm less than a score. Half of my number is less than four. Add one to my double when bakers are near. Days of the week are still greater, I fear.
What flies without wings?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?