3 things come to mind:

1. I remembered the pipes, but forgot the chanter.

2. Had a rubber cork in the chanter stock to blow and tune drone reeds, then forgetting it is in there and jammed the chanter reed into it...destroying the reed.

3. (just after #2 happened)...didn't have a backup reed to replace the one I just crushed.

Lesson learned on #2...I switched to a white rubber stopper....and always have a backup reed.