Indian Chief, Island Castaway, Inspector Gadget, International Rescue (Thunderbirds), Inmate, Indian Maiden, Ice Queen.
an ice cube
queen
Someone can buy fancy dress costumes in the UK at Argos and Fancy Dress Ball. These two stores have hundreds of fancy dress costumes specifically for Halloween.
SUPERMAN, Scheherazade
Noddy / Navy / Ninepin
Skeletor costume starts with s.
One way to find ideas for childrens fancy dress costumes is to get inspiration from the many children costumes for sale online. You can browse sites such as AllFancyDress or PartyPacks under fancy dress costumes. That will surely give plenty of ideas.
Kitten and King Kong are fancy dress costumes. They start with the letter k.
Admiral, Aphrodite, Air hostess, ambassador, Austin Powers, army uniform are possibilities.
Elf fancy dress costumes can be bought online for a reasonable price. Popular choices would be eBay and Amazon. Alternatively, fancy dress shops such as Joke or Fancy Dress sell elf fancy dress.
Elephant? I not to sure
If you live in Newcastle you might find it hard to find somewhere selling fancy dress costumes. You would probably be better off ordering online.