I created the following day partly on my own and from borrowing ideas of other teachers from the following website:

http://www.roalddahlfans.com/teachers/dahlday.php

After completing a unit study of Roald Dahl books, we celebrated this author's life with a special day.  Students dressed up as characters from Dahl books and gave character sketch presentations.  We ate drank "Frobscottle" from the BFG (based on a recipe from Dahl's Revolting Recipes book).  Students played Pin the Dream Catcher on the BFG, watched the BFG movie, completed a t-chart comparison between the book and the movie, and enjoyed a Roald Dahl buffet lunch complete with Mr. Twit's Beard Food, Sticky Toffee Apple Trees, George's Marvellous Medicine Chicken soup and many other dishes from the Revolting Recipes Book.

The kids are still talking about the day, and the parents had a blast as well.