My House Party on Etsy you'll find tiny houses galore. Their tiny house ornaments are sold individually or you can get a box set of all 4 designs. They also have tiny green houses that come with an air plant. And last, but not least you can get tiny terrarium houses to adorn your terrarium or a potted plant! Here is a photo from their blog of a sweet display they set up for an event at Tumbleweed Boutique in Portland.
(Images: My House Party)