I've been thinking recently about using card model templates to make models out of sheet styrene instead of paper. B&W laser printer and photocopier toner can be heat transferred with a clothes iron, so I was thinking it would be easy to just print out cheap B&W pages on plain paper, transfer to styrene, then cut an assemble from there.
You'd have to leave out the tabs, depending on how thick your styrene was, and some models would have to be printed out flipped/mirrored, since the transfer process would flip them (I don't know how to do that with a PDF). Also vehicles with wheels would need extra work to eliminate the polygonal wheel look. The benefit though would be that you would have a much more durable model, which could also be fully detailed in 3D by cutting and layering the printed-on surface details separately, as well as whatever aftermarket/bits box details you wanted to add later.
More work than a straight paper model, but it the end product would be a full & proper plastic model, and for more or less the same cost as cardstock, depending on where you buy you styrene.