Decide on a theme that is familiar, meaningful and relevant to the child, eg. your Saturday routine, interests or favorite places.
Using the scrabble-like formation, prompt the child to come up with words related to the theme. After each formation, prompt the child to write down the word.
When you have exhausted the formation of the words, given the cubes and the scrabble-like formation, you can help the child to write a "story" using the words, canceling them as they are inserted into the story.
This version is exactly like the conventional method in which Spit it Out! is played. However, in this case, the speller is the adult and the guesser is the child.
Instead of being limited to 24 cubes, the adult speller will have access to all the cubes in order to come up with meaningful clues for the child to guess the word.
The adult speller forms the clue with the cube and prompts the child to write down each word followed by a "+" sign and then doing the same with the next clue word. I limit the number of clue words to no more than three, otherwise the adult speller may "lose" the child who is overwhelmed by the sheer number of the clues. He writes the "=" sign to indicate that the last word is the one that he has to guess
Then I give him the first letter of the word I want him to guess. When he guesses it, he will form the rest of the word in cubes and write it down.
place + shower + pee + poo = bathroom
Internet + typing + click = computer
place + bread + croissant = bakery