Answer:
Tickle with your fingers and a song it will sing. Be careful, though, you may break a string. What is it?
What sphinxes employ and players enjoy.
Most people need it, some ask for it, some give it, but almost nobody takes it. What is it?
You'll have to consult an optometrist if you want to improve this.
What calls for help, when written in capital letters, is the same forwards, backwards and upside down?
What language does a billboard speak?
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?