Modern M0110 keyboard (DIY)
This weights a brick, literally. (3 kilograms!)
Modern M0110 keyboard is modeled after the original Macintosh keyboard (M0110) (year 1984), but with aluminum frame.
〔see Apple Macintosh Keyboard M0110, Year 1984〕
more info at https://www.deskcandy.xyz/
〔see Apple Keyboard History ⌨〕