Awaken to the sound of papers being vigorously shuffled.
Huckleberry (it couldn't have been anyone else) is standing in my top desk drawer, playing with all the things (checkbook, stamps, long-term financial records, that sort of thing).
Remove critter. Close drawer. Return to bed.
Hear papers being shuffled. Repeat process.
No good. He's learned to open the drawer, and, by Cloister*, he's going to play with the things!
Out to the garage. Fetch a yardstick. Poke it through the drawer handles. Confirm that it's now hard to open. Resume sleeping until awakened again by purring and prodding at a more suitable time.
Later: Huckleberry paws at the yardstick, looking sad and wondering how he's going to get the drawer open now.
* Cloister the Student, the god of the cat people.