Restlessness - as a symbol I picked a clock. This item should stand for our very stressful life, nobody has time, everything is busy.
For me, a place full of deep of thoughts is the cemetery, there you have time to commemorate your dear departed, think about life and death and the meaning of being.
I had chosen the "coincidentia oppositorum", which means that opposites can be joined in one thing. So, for me the rose is the best example: it combines beauty and pain, can be used as a presents for your true love or to say goodby at a funeral.