Buy a new one or salvage one off another keyboard, any fix involving glue will be temporary at best. I would swap it for a key on your keyboard that you don't use.
This may sound kind of dumb but, why not just replace the broken key with one you do not use. There are several keys on my keyboards that I don't use. Put the unused key on the spot and relabel it.
If that doesn't work, build an new tab clip using Bondo Body Filler. Use dental tools to mold the Bondo and affix it to the key. A little sandpaper should finish the job.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.