Ayyy - speaking of Parvos decorations?
There's a bunch of stuff that would be great for home furnishings that we see all the time. On topic, those Corrupted Holokeys look cool and I want 'em. :D
Also:
The data carrier from Mobile Defense missions.
Grineer and Orokin Lockers (currently we only have Corpus, and they're miniature :( )
Currency Stacks/Piles (Ducats, Credits, etc)
Fuel and Coolant Cores from Sabotage missions.
Computers (Corpus, Grineer screens, Albrecht's computer, etc)
There's a lot more, of course, but maybe more regular things for decorations? :D