Looking for new activities for my 6 month old baby

At six months she is sitting up. She can play with blocks. You build the tower, she knocks it over. There is some gymnastics stuff and dancing that can be done. And singing of course. Reading is a big thing, too. Check with your local library. They may offer some reading program for that age group. Well, it's more singing and stuff. There are also playgroups you can get into or organize.