Where can I find large (lifesize), realistic leaf cutters (like the oak and maple leaves)? I have been looking for some for years. Thanks!

Have you googled? Without searching myself, I would think that you could definitely find a large cookie cutter in the shape of a maple leaf at least.

I have seen some at bulkbarn(canada)
And you can order them online - flour confections
(large life size maple leaf on second page)

http://www.flourconfections.ca/shop/advanced_search_result.php?keywords=leaf&osCsid=54c4910e9e592d613491c6510bf3caf1&x=0&y=0

And Gouldas Kitchen

http://kitchenware.goldaskitchen.com/search?w=leaf&asug=&x=0&y=0