Answer:
They can float and tickle, but their sound is rarely heard unless you're a pillow or bird. What are they?
It cannot be seen, it weighs nothing, but when put into a barrel, it makes it lighter.
Gets rid of bad ones, short and tall. Tightens when used, one size fits all.
Twigs and spheres and poles and plates. Join and bind to reason make.
Both punishment and sweet reward, It will befall both fool and lord. It is a spiritual scoreboard, Your every deed it does record.
Why did the stadium get so hot after the game?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?