Take a look to other printable gadgets, regarding river tourism, we prepared for I’VE (Itineraries in Eastern Venice) project: http://www.i-ve.it/turismo_fluviale_gadget.php
Integrated solution http://www.virtualgeo.eu/soluzione_integrata.php
Ask for free cost estimate http://www.virtualgeo.eu/areaPreventivi/login.php?lang=eng
Printer 3D http://www.virtualgeo.eu/prototipazione_rapida.php