Stacked acrylic keyboard
this was when stacked acrylic keyboards we all the rage 22-23 i think, iv-works launched their alice boards which inspired me to build my own thing , it was complete custom case with custom pcb of my own design 
stacked acrylic case with alu plate gasket mounted
that white plate connects to the top layer and locks in with a notch with other plates 
transparent back.. remove brown paper for transparent..
pretty lengthy and expensive but fun project