@JoeyLiz Great idea to come up with something symbolic!
I like what @SoldierCrab put up - one of her links is a poem. Is there someone local that has been affected and would be willing to write a poem that could be part of a bell ritual, for those that want to participate or at least read the poem.
Maybe there's a local group that you could engage to make something, soap or flannels as a parting gift with the poem wrapped up with it?
Just a thought!
https://www.facebook.com/Endoftreatmentbells/