How did Brick Road/Dungeon Man come across the items and vehicles in his collection?

Ah yes, Brick Road soon-to-be Dungeon Man. Brick Road was a relatively simple man who dreamed of making great dungeons, to the point of becoming one, while Dungeon Man is Brick Road's realization of his dream and is the result of Dr. Andonauts Chimera making prowess (a prowess he may soon regret possessing).

On the now realized Dungeon Man's quest to become the best dungeon known to man, he scoured Eagleland, searching for objects to showcase and enhance his dungeon, coming across helpful benches and cheeky "unintentional" homages to popular culture he could add to his personal collection. Whether the objects came from Dr. Andonauts, the locals, or were just lying around, Dungeon Man added them to his ever-growing collection, his apparent pride and joy, which he will stick with until he reaches his end at his "eternal resting place."