I started off with dragon's eggs (brownies) in a basket with "grass" (tissue paper was all that I could find at the last minute) I used a recipe from vegancooking, but I can't remember exactly which one I used. And I made them in a little mold that I got for easter a couple years ago to make easter egg cakes to decorate, and then glued the halves together with frosting.
The second day I made Pepper Imps (peppermint patties) from a recipe on vegweb. I took an empty applesauce bottle and filled it with the imps and googled for some images to decorate it. I used a mold of gingerbread boys and girls (cause sadly my local kitchen store didn't have an "imp" mold, whatever that would be).
For the last day, I made Chocolate Frogs. I found a website that shows how to make the boxes, and I googled Frog Cards so that I could make my girl her very own wizard card. I found a frog mold, and made the peanut butter cups from vegweb.
All in all, it seemed like a big hit! thank you all for your suggestions!