MirrorSea
Every time Luke is sent to spend a month aboard his father's star destroyer (per the custody arrangement) he has to entertain himself in unconventional ways, such as giving the stormtroopers some much needed exercise, giving Admiral Piett anxiety, and plotting his escape.
Currently a two shot, but I may add more someday.
Warnings: Skywalker shenanigans and Piett rethinking his life choices.
Disclaimer: I do not own Star Wars. Or the cover picture. All I own is the story.