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 ⌨]