I'm nearly at the end of my story, and I'm struggling to finish it. Ashley (male) and Anna were best friends since childhood, until they grew apart and didn't talk to each other for many years. When they are both in their thirties, they meet again and go on a trip to Ireland together, initially hesitant but gradually getting to know one another again, solidifying a new friendship.
At the end, I want Ashley to present Anna with a gift that symbolises their new friendship, but I'm absolutely stuck for ideas. Their relationship isn't romantic, so something lovey-dovey isn't appropriate. It should be something meaningful.
How could I make this gift symbolise their new friendship in a way the reader can understand? What techniques could I use to bind one item to this meaning or to any symbolism in a story?