Kimono bookmark
http://huckleberriesandbears.com/2008/01/crafts-how-to-make-kimono-bookmark.html
Make a kimono bookmark to celebrate 7-5-3.

Clipart 7-5-3 
http://www.printout.jp/clipart/clipart_d/02_saiji/14_753/clipart1.html
Create flashcards with these images of shichi go san.

Flickr Slide show
http://www.flickr.com/search/show/?q=shichi+go+san&s=int
Watch a slide show of different pictures related to 7-5-3 festival.

Images
http://www.fumira.jp/cut/sitigosan/index.htm
Create flashcards with these images of 753.

Shichi go san Explanation
http://web-japan.org/kidsweb/explore/calendar/november/shichigosan.html
Information about the origins of 7-5-3 and what they do to celebrate this festival.