TPT ideas needed!! :)

Hi everyone!! I am ------>  <------ close to being done with my summer class for my Reading Endorsement! So now I'm moving on to do the few things I put on my Summer Bucket list. Next up: Put something up on TPT! It will be free but I don't know what to do. I have too many ideas floating around in my head. So any suggestions? I teach 2nd/3rd so I'd like it to be something I can use in my class also.
Thanks! Can't wait to hear from you. :)