Historical 3D wooden puzzles

We're a small company for Zagreb, Croatia. Our country has a very rich history so there's an abundance of very old and very important historic sites. The goal of this company is to turn old buildings like cathedrals and forts into fun and educational souvenirs. If you ask us, the best way to do that is through 3D puzzles. Now, as you all know, wood just gives out that warm and friendly feeling both while working with it and while just looking at it so that's our material of choice. We've already started manufacturing some of our puzzles (which you can find on our web site - http://wolfdesign.hr/product-category/historical-m...) but we lack the proper funding to continue designing new products and we'd also like to expand our production lines (extra laser cutters and 3D printers for the small detailed parts) so more people would be able to enjoy our products. We make most of our sales during medieval festivals and SF&Fantasy conventions in Croatia and as far as we can tell there are many people, both locals and tourists, interested in products of this type but the local politics makes it had to get government/city funding. Have I mentioned we're the only company in the region that makes such products and maybe the only ones in the world to use the combination of laser cut wooden parts and 3D printed parts?