I do have a few ideas for the 1000 hit celebration:
MUSTACHES AND EYE PATCHES FOR EVERYBODY!
I can't think of a more fitting way to celebrate a Polk level event. After all, James K. Polk was known to don his mustache and eye patch only during special celebrations, celebrations like his administration's acquisition of the Oregon territory and the American victory in the Mexican-American war. Here is a picture of one such occasion:
It's also a little known fact that all crew members of the submarine, USS James K. Polk, wore mustaches and eyepatches on the vessel's maiden voyage.