I'm not really sure what all subjects you have covered in the daily trivia questions since I'm fairly new here. But some subjects that come to mind are:

1. Winnie the Pooh
2. Sesame Street
3. Famous nicknames
4. Famous animals
5. TV Trivia

Just some thoughts that came to me. Of course if you make it too hard I'll never be able to answer...lol

I try to keep them easy! I look online for trivia sections and use there help too:) But I will keep that in mind. I just finished up with Charlie Brown today and am going onto another section tonight:)