Activities to be close to baby

I'm 6 weeks now and won't see OB for a few more weeks or tell anyone else about pregnancy for almost a month. Yet, I can't get baby off my mind! I want to spend my energy helping baby grow and showing it that I care and want to form a bond, if that makes sense. I've already read some books so now I'm spending my evenings crocheting baby things to put this energy into something constructive. What do you all do at this early stage to prepare for/feel close to baby? Or do you plan to do those things later?