The plastic casing for my Pokemon Black 2 got shattered however the internal memory board appears to be intact. Has anyone come across any form of replacement casing that I can acquire?

I don't believe there's anything you can do but you can attempt to call Nintendos Help Line and see if they can help any.

Try electrical tape and a flat piece of plastic. Otherwise you may have to replace it

Amazingly putting the casing back together and taping it worked and I got the cartridge back in my (daughter's) machine and working. Now to work out how to get the data off and on to a new cartridge while it holds....Thx.

You could get an used old / useless game with an intact casing and make a brain transplant between them.