Chalice of Malice
As with Men in Blues, ET can be hanging around with the Blues Brothers in Boron’s dream, although they can’t see him/it – the creature is invisible to them. Although, ET can have powers over the physical (as with the film Ghost) and the BB can react to those unexplainable helper moments. Alternatively, ET can have a full rapport with the Blues Brothers, with Jake keeping it in his backpack. ET goes home during Boron and Elwood’s wedding – a ship comes to collect him after the band play (the alien ship picks up on the song on its scanner – prior to this, ET passes the band a written song request to play “Straighten Up and Fly Right” in a particular key signature whilst it also places a crystal in between some headphones that are connected to the mixing desk.) ET can do things like drop a ring into Elwood’s fiance’s pocket and attach a note after they have a dispute over something insignificant. It would also be possible to include other characters in the story, for further mashing up, eg Kermit the frog.
Miss Piggy and Kermit can also be at the wedding, with Miss Piggy urging Kermit to marry her whilst she raps on stage.
Kermit then battles her, and explains she is living a fantasy and all their marriages up until that point have been fake and only for show, and without a real minister.
“According to The Muppets Character Encyclopedia, all of Kermit and Piggy’s weddings have been fictional, but Piggy carries around a marriage license in her purse, just in case.” Muppet Fandom
A bunch of other muppets can also be there.