The first encounter in the Prepared! collection has the PCs standing off against a goblin fortress. In typical goblin fashion, the fortress aspires to greatness - but falls more than a little short.
Journalist, gamer, contributor to gnomestew.com, and papercraft enthusiast Troy E. Taylor contacted me before his adventurers assaulted the Impregnable Fortress of Dib, and sent me a great photo of the wagon before its destruction. Furthermore, he sent me a PDF printable that you can download here! Now you too can have a dire-badger-pelted wagon to set on fire.
Be kind, game on!