Answer:
Though not a plant I have leaves. though not a beast I have spine. Though many wouldn't need me I am more valuable than wine.
What is black and white and red all over?
What has one head one foot and four legs?
I am a mini solar powered computer.
I build up castles. I tear down mountains. I make some men blind, I help others to see. What am I?
Who makes it, has no need of it. Who buys it, has no use for it. Who uses it, can't see it. What is it?