The Shroud of the Avatar web page have news that July 4th was the birthday of Lord British, and they offer a cake in the game to celebrate until July 30th.
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The only negative here is the item will cost you money.Celebrate Lord British's birthday on July 4th with the Replenishing Birthday Cake. This is a special birthday cake, that each year on the anniversary of when you created your pledge account, will generate a random item!
More information.