Shrimp and Bird Cages

When I do these posts, I usually work from notes that I jot into my reporter’s notebook as I go about the day.  Under the entry marked “10-30” I have just one line written “shrimp and bird cages”.  These lines are usually enough to trigger the mental chain that results in me writing a post but today that seems to have broken.  What the hell did I mean by “Shrimp and Bird Cages”?