Answer:
I am the only thing that always tells the truth. I show off everything that I see. I come in all shapes and sizes. What am I?
I am an instrument you can hear but cannot touch or see. What am I?
I am a mini solar powered computer
I am a word of letters three. Add two and fewer there will be. What word am I?
I can only be played on a windy day
Break me and I am better immediately set and harder to be broken again.