They are definitely at the low-end of the 3D puzzle (never mind wargames terrain) quality scale, but I see two uses for them;
1) A quick and dirty way to add a landmark to a city for kaiju (giant monster) gaming. I have Tokyo, New York, Toronto, and a generic Monster City layouts in development using higher end 3D puzzles and other trinkets as landmarks and cardstock buildings for the rest, but by dropping one of these on a table with some generic buildings gives me Moscow, Barcelona, Istanbul, Beijing, Kuala Lumpur, etc. Great for a worldwide kaiju campaign (or recreating Destroy All Monsters or Final Wars)!
2) Giving away to my nephew for his kaiju gaming/playing. He has a city board I made of foamboard and spare foam cutouts, and now I'll give him whatever doesn't work for me (he's scale immune - action figures and 3" Godzillas on the same table are fair game) and all of the doubles I picked up.
And ironically, I couldn't find the soap dishes! I did find some crystalline space monsters and a space station disguised as Xmas decorations though, as well as the big find above.
FYI, there isn't any brand name on the puzzles, just Made in China and $1!