E.S.
When I started reading your request I had to giggle. Not that I'm reprimanding you on you typing, but you typed that you're getting your brother's family a "poorn maker". I'm sure your brother and his wife will love it (LOL). But to answer your request, I don't know anything about popcorn makers, but as far as the gift for the little girl, there are some large size Disney Princesses and Tinkerbelle that would be great for a young girl. Just check for any small accompanying toys (I got one for my daughter, but I can't remember if it had little birds or something with it. But it's big enough for her to walk around with and call her baby). She may also like some dress up outfits like princess skirts and fairy wings, somthing that you both can play with. I have pictures of myself wearing one of those tall princess hats, gold lame skirt, and my daughter is wearing a flapper's dress, hat and plastic high heeled shoes.
Happy Holidays!