Answer:
A mighty weapon in the war against winged household pests.
I can be cracked, I can be made. I can be told, I can be played.
What has a spot and is very bright, is sometimes, red, white, blue, yellow or green and is often blinding.
I cannot be other than what I am, until the man who made me dies. Power and glory will fall to me finally. Only when he last closes his eyes.
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.
You use it between your head and your toes, the more it works the thinner it grows.
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?