Over the years, the Congregation for Humanistic Judaism has created a library of services that it makes available to individuals and other congregations. Each year these services are tweaked a bit or a lot, as perspectives change and the responsible congregation members deem appropriate.
You are welcome to download any of these services, which are in Word doc format except where noted.
Passover Haggadah (pdf)
Yom HaShoah Service (pdf)