Anti-Faro UV Flashlight

Wasn't sure a UV light would make much difference on the Stellar Dread puzzle cards, but the hidden marks pop instantly under this thing. It's small enough to keep in the box with the game.

Bought this just for the Stellar Dread puzzle and it lit up the hidden clues instantly. The beam is bright enough that I didn't even need to dim the room lights.

The beam is narrower than I expected, which turned out to be perfect for scanning the card borders in Stellar Dread without lighting up the whole page. Found the hidden clue on my third pass and finally cracked the puzzle.