It can be interesting to search for papertoys in other languages. In German google papiermodelle. You will get several links. In Dutch this becomes: papiermodellen. These are plural, single is: papiermodel, or papier model in both languages. See this site for instance: www.papiermodelle.de
A really big site in Dutch is: www.icebergbouwplaten.nl/
You can however choose to see the site in English. It leads to an enormous amount of links. Bouwplaten is also a good Dutch word to search for paper toys. Add to bouwplaten: papier.