Possible Clues:

• Collectibles from faraway lands
• Rare/foreign items
• Interesting and strange objects
• Strange stuff
• Reading matter literally outlandish
• Odd items of drums and hammers perhaps sealed in sack on reflection
• River containing strangely toxic things with a foreign flavour
• Strange things one has to cross -- great bridges to the north
• Small company tax that is adjusted for objects from distant countries
• Things rarely seen