Last Session Rituals?

I have recently been thinking about last session / termination of services rituals. At a past community health agency that specialized in expressive arts groups, each client was given the option to paint a small (4×4 in) canvas that would be added to a wall of them. This created a "quilted" visual effect. I liked the symbolism of belonging to a broader community.

Which leads to me to ask-- what rituals (if any) do you employ during a client's last session?