That's why I always have a clear case on my Macbook I cover with stickers. That way, I can take them with me when I leave, or take them off if I have a big meeting/presentation!
I have this recollection of some framed / shadowboxed clear case covers that were covered in stickers. Either the laptop was replaced and the new model didn't fit... or the cover was filled up and a new one was used.
A way to keep the memories of that the stickers represent.