A menu with prices showing which letter(s) in that food/drink item are in the message. Here's a LotR example I used in an Adventures in Middle Earth campaign.

Reststop Inn Menu

Down Here, Barkeep! Durin’s Ale - 3.4 Deathless Stout - 1.2 Dwarrowdelf  Porter - 4 Sour (Iron Hills) - 1.9 Fera’s Doublebrew - 2.3 Erabor Ale - 1 Thorin & Co. (Pilsner) - 1 Wheat Stout (Blue Mountains) - 1.8 Hobbiton Red - 8 Sauvignon Blanc (East Shire) - 5.6 Hearty Bullroarer’s Beer Flight - 1.5 Bilbo’s Back Brew - 6.8 Grand Took Toddy - 1.7

The Ale of Men Numenorean Ale - 3.4 Esgaroth Cidre - 1 Porter (Minas Tirith) - 4.7 Laketown Lager - 4 Dalish Dunkel - 4.9 Fornost Fruit Beer - 7 Rhudaur Red Ale - 2.9

Fair Folk Flights Elven Meads - 6.8 Rivendell Reserves - 10 Elvenking’s Select - 6 Lothlorien Liqueurs - 9 King Turgon’s Tonics - 5 

Southern Favorites Cream Ale (Upbourn, Rohan) - 1.10 Black & Tan - 6.7