I make up worlds both big and small, with castles high where wonders call. No rules I keep, no lines I see, I am whatever you want me to be.

I’m aged but not alive, I can crumble or I can thrive. Mice may chase me in their dreams, Yet I’m not quite what I seem.

I am a long, silver snake that bends but never breaks to bite. I spend my days gripping twins, triplets, or crowds, keeping them in perfect order. If you strip me of my second half, I am just a daily read. If you strip me of my first half, I am a trim or a movie scene. What am I?

I stretch and bend but never break, I calm your mind for wellness' sake. On a mat I'm done with poses slow, breathing deep from head to toe. What am I?

I am in the beginning of sorrow and sadness. You will also find me in happiness. You will find me in sun and stars, but not in moon. I am in summer and spring but not in fall or winter. Who am I?