Go to Thimbletack's profile and watch the trailer to receive...

User Image - Seeing Stone - Add to Wishlist
"All can be known with a lens of stone. If you dare look through this stone ring, you would be amazed at what you may see."
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Go into Towns and click on the pile of shining leaves. Talk to Thimbletack to receive...

User Image - Spiderwick Field Guide - Add to Wishlist
"A mysterious book bound shut, with a warning on the cover. Will you dare open it?"
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(This item is no longer available.)

If you complete the second part of the task, you'll now receive...

User Image - Spiderwick Sprite - Add to Wishlist
"If sprites are spotted, you can be sure you are in an area with a high concentration of faerie activity."
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This quest is no longer available.