The smaller ships in the front row, with the exception of the Firefly transport, all came from a bag of cheap rubber spaceships available on Amazon and eBay. They're very cheap, and because they're so flimsy I didn't think they would take paint well.
However, a quick wash with isopropyl alcohol followed by a coat of gesso or multi surface acrylic paint prepped them nicely for painting. When you see here is just a quick and dirty job, but the sculpts lend themselves very nicely to taking paint.
There are some designs in the bag of 72 that are too toylike to be useful, but not many. Several of the designs remind me of spacecraft from the old Traveller and star Frontier RPG books. I got plenty of useful spaceships out of the purchase so I would highly recommend it. If you're interested, you can find them here.