Rainbow Writing. Give the child several colors to trace and retrace a word... Make it developmentally appropriate! Younger kids get shorter, fatter crayons, and maybe just a letter. Older children get their names, and those who have already mastered that can work on meaningful sight words.
Dollar store photo albums...turn them into flashcard fun! Easy to write and wipe. Just insert what you are working on. You could even just insert white paper and have them work on writing sight words. There are so many ways to use them!