A lot of sight word activities. Sight Word Graphing - good idea, can adapt for more difficult words and get a newspaper article or a page from a book/story and have them go through and graph how many times the sight words occur from the article/story.
I LOVE this! First Day of School activity - Students' Job & Teacher's Job--I do this similar activity each year except I do 4 squares. Teacher job is/teacher job is not, student job is/student job is not