What is a Spiritual bouquet?
A bouquet of Spiritual deeds that you do, offering it for your Parents/Grandparents e.g. certain number of rosaries offering it up for them, good deeds, reach out to people in need or it could even be to help your siblings, spend time reading bible, personal prayer for parents.
How to present the Spiritual bouquet?
Make a nice card for your parents and write a message.
E.g. Dear Mum & Dad, I offer all these to you: (Mention your deeds) These are made for your good. Love, (Your signature)