Mama needs help with toy advice

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My daughter is six and half months. She started to roll from tummy back to her back. She is not crawling, she sits up by herself great! I'm not rushing her by any means. I'm just wondering if she should be using toys that could help her. Should I get her anything that is useful and you 100% would recommend. I have a saucer that she uses. And we're always sitting and playing. Any suggestions? Pictures would be great to see what you have!