I am getting 3 female mice and I was wondering what a good brand of hamster ball is so that they can run around outside their cage? I sometimes feel invisible in front of others. I'm very talkative and have lots of good conversations although I am not the one they go to first. What can I do to change that? I'm a very nice person and everyone accepts me, but I can never get a bond with someone. Should I become more of a mean person?