When this troper couldn't make it to one of my weekly game nights, my GM cooked up a ShaggyDogStory to explain my PC's absence and to provide a bit of a BreatherEpisode for the other players. My character, the team mage, had holed herself up in her room in order to mystically search for her mentor, who had recently gone missing. After a few days had passed and she still hadn't come back out, the rest of the team would break in to find her gone, evidence of a struggle, and a map to an enclave of enemy mages. Aha! She's been kidnapped by these evildoers! The party follows the map to the enemy camp, battles through several {{Mooks}}, and defeats their leader... problem is, their teammate is nowhere to be found, and the enemy insists they never laid a hand on her. The team returns to their base in search of a new lead, only to find their mage sitting in the kitchen, sipping tea and wondering why they're all staring at her like that. Turns out the stress from the current MythArc was making it impossible for her to search properly, so she had snuck off to enjoy a weekend beach retreat (yes, without telling her teammates--
most of them contributed to her stress in the first place) so she could try again with a clear mind. While she was gone, a cat had gotten into her room and made a mess of things before leaving, hence the "struggle." But then the story gets meta--when I later asked my GM how the game had gone, he told me that the other [=PCs=] had all taken the mage's warning not to bother her unless it was an emergency to heart and stayed away from her room--they had never even realized she was gone.