Wonderful that you are thinking ahead. My son became an eagle scout. There is a ceremony and reception afterwards. At least for his generation ( 31 now).
All his patches were saved. I put them in a frame against fabric of olive pant green like boy scout . BUT I had saved his boy scout shirts with all the arrows and patches. all his stuff was original as placed on as a little boy.. The 150 plus people that attended were from his original cub scout adult leaders through to scouts, family and friends. They were all thrilled to see everything and hung around each patch remembering.
My advise. Not sew now, but keep well tucked in a box if you already have not added to a shash, vest ect. and label what, when and where. add pictures of him at his age in the shirts as you go.
The fantastic quilt was for after scouts was over. and it was FANTASTIC !! I do remember what you are talking about.
Good luck. enjoy your scouts ! they have fun ! Much success to all figuring all this out.