Question: I used to fill rooms but now I'm a tower,
I can stay put or I can travel far.
What am I?
Hint: I can live on a sill,
I can be a tasty fruit.
If I get injured,
I'll need a good boot.
Answer: A computer. They used to be huge and desktops are now referred to as towers. They can be desktops (stay put) or laptops (travel far). The computer can run windows (sill) or it can be an Apple computer (fruit).
Question: I live with first ones ,they use me well! For the others I am hell! For the third ones I am useless,you can't touch me but you can see me! I am always there within you! Seek for me and and I'm right there! What am I?
Answer: Your Imagination