My recipient this round was mundungus42, for whom I also wrote "The Possibility of the Improbable" quite a few rounds back. Initially, I thought this gave me a chance to write a tale I'd had in the back of my head for years...but that idea declined to supply a plot to go with it, and so I reread the signup post, noticed an improbable-looking possibility (why yes, you should be picking up a theme here), asked myself a couple of key "what if" questions...
...and the rest pretty much rolled out like a magic carpet from there, including two complete musical numbers, a sheep (or SHEEP), and a theater that may just be bigger on the inside than it is on the outside.
The Affair of the Command Performance
Fandom: Sherlock Holmes (ACD); Muppet Show
Rating: G
Category: gen
Warnings: none
Words: ~6900
Relationship: Sherlock Holmes & John Watson
Characters: Sherlock Holmes, John Watson, Kermit the Frog, Statler (Muppets), Waldorf (Muppets), Sweetums (Muppets), Scooter (Muppets), Dr. Bunsen Honeydew, Beaker (Muppets), Rowlf the Dog, Baskerville (Muppets), Rizzo the Rat
Additional Tags: musical, songs, stealth crossover
Holmes and Watson are invited to an evening at the theater - only to find themselves guests at an unexpected celebration with an even more unexpected mystery behind it, and an even more unlikely performance as its featured climax.