Well, sence I'm really starting to like you with all your cretive ideas, I went out and found a list of every Devil Fruit that has appeared and is going to appear in One Piece.
First Is a list of the three types of fruit there are:
#1 - Paramecia Fruit: Where the devil fruit changes the physical body itself.
#2 - Zoan Fruit: Where the devil fruit allows the person to turn into an animal. With a Zoan fruit, they can take a form of Human, Half Animal Half Human, and Animal.
#3 - Logia Fruit: Where the devil fruit allows the person to completely transform into their devil fruit and control it (Ex. Fire). This is the strongest type of devil fruit.
Now is a list of what Fruits your were really close on, just wrong names:
(Jake Parriki) Pyro: Mera Mera Fruit: Basically its like what you had down except the person can extract fire AND turn into fire at will.
(Jeffrey Bridges) Sparky: Goro Goro Fruit: Allows the person to become pure lightning.
(Branigan Sky) Shivo: Hie Hie Fruit: Allows the person to become ice and freeze things. If shattered, the person can reform its body, like the other Logia users.
Now is the list I did to help you out (as there aren't any real fruits of these as of yet). So here you are:
(Mary Lou) Marina: Glug Glug Fruit (Can't do anything with this one so will leave it as is.)
(Captain Candice Worthigton) Candy: Ether Choco Choco Fruit (meaning she looks like a piece of chocolate and can melt into a puddle along with the other stuff) or the Gummi Gummi Fruit (like the Gum Gum Fruit save she's more like a gummy bear then gum). Those are the only two I can think of.
If you need further ideas, here's the site:
http://www.arlongpark.com/index.php?page=devilfruits
Hope these help.