Flatpack
if you mean the ones with Miss Marple
Main 'shells' came from the insides of a 'steam' radio.
Most of the internal workings are pen tops & biro tubes.
The control wheels are press studs.
If you mean the one with Poirot.
Part on the right is an old ink cartridge from a computer.
Part on the left came from Urban Constucts. (They do nice bits, like Tiger tank engines)
The pipework is old sprue.
Does that answer your question?