One very good thing about FreebieJeebies (freebie site) is that when you have signed up and completed an offer you can choose what ever FREE gift you want.

This is very simple to do. When signing up select any gift, it is not important at the moment and can be changed when ever you want.
Now that you are signed up and have completed an offer click on "My Gift" and you will notice a search bar for custom gifts.  Search for what ever you want and then when you have decided send a support ticket with what you have chosen.

Also to change your gift to one of the originals giving by the site, click on "My Gift" and you should see your gift in the picture, next to it will be a link to change it.