In 2016 inspired by Finnish shamanism and the work of Jennifer Ewing, I did a Spirit Boat Project. You can read about it on this blog post.
I later used the spirit boats in an art ritual on Remembrance Day for Lost Species and wrote a piece for their blog here.
A little video of making the Spirit Boats and setting them adrift on the River Ouse:
Spirit Boats from Alexi Francis on Vimeo.