Answer:
I can be simple or I can be complex. I can be found in this riddle or in everyday life. I can be shapes or even colors.
I am a king who's good at measuring stuff. What am I?
I shrink smaller every time I take a bath.
When you stop and look, you can always see me. If you try to touch, you cannot feel me. I cannot move, but as you near me, I will move away from you. What am I?
Whoever made me doesn't want me. Whoever bought me doesn't need me. Whoever uses me doesn't know me. What am I?
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.