I had planned to put it into a little Tupperware container to put in his memory box/tub.
So I carefully put it on the changing table in his room.
A few days later, I went to go retrieve it. It was gone. No where to be found.
By my powers of deduction, I have decided it met one of two possible demises:
1) the cat ate it
2) the cat batted it onto the floor, and Corinne ate it
I really hope it's #1.