a) For western society, the Micronauts would be a new form of science fiction character toys where the parts could be switched around and change function, based on the Japanese company Takara's Microman toy range introduced in 1974.
I can not say whether Giger was shown images of these things or a friend of his collected them rather than expecting him to have collected them personally, but traces of these toys have turned up in Necronom series of paintings and the Alien designs none the less.
b) Stratastation referenced in Necronom II ?
e) Microtron referenced in Necronom V ?
f) Hydrocopter referenced in Necronom VIII ?
g) Astrostation referenced in Necronom IX ?
h) Hydra referenced in the Pilot in the Cockpit (Space Jockey)?