Our first idea was to have players use the names of the actual objects that had been altered, added or deleted in order to form a greater picture or phrase. However, there are multiple ways of describing a change (if a vase of flowers is added, is the word vase, flowers, red, or black?), so it did not seem feasible to use the actual objects as signifiers for a greater word phrase.
We thought it best to have the difference or change instead signify a location where a clue was hidden. The clue would be part of a key used to decode a cryptogram.
Research into puzzles and cryptograms