The Fry Cook Baseball Game - Mr. Krabs starts his own baseball team with his own employees and their friends. In response, Plankton of the Chum Bucket starts his own team, consisting of robots he built from scratch. Hi-jinks ensue...
Squidward's Twin: Squidward's long lost twin named Octowest but he is opposite of Squid, he's very nice to Spongebob and Patrick! so Squidward can have a relaxing day at Octowest's house until he found out that Octo have two neighbors look like Sponge and Pat but they are very much mean and they find him annoying because of his clarinet and dancing that remind them of Octowest himself!
Note: Squidward = Burt WARD and Octowest = the late Adam WEST ts a reference to the actors who does Batman and Robin from the 1960s tv show version of Batman
Stranger Patties: After finding a Krabby Patty Monster in the kitchen (the "Krabbygorgon"), the monster leads SpongeBob into a parallel dimension called the "Bunside Down." Will SpongeBob ever get back? The episode title and plot are loosely based on season 1 of Stranger Things.
How about Various Episodes focusing on Sandy's Pre-Biniki Bottom Days; that way We can explore her own backstory, without disrespecting Steven Hillenburg's Wishes for the series to have absolutely NO spinoffs. . . *cough* Kamp Koral *Cough*, and that way we can still have more Trusty Slab Episodes, without the need of a spin-off. . .
Star-Studded Collar: Patrick finds a collar while dumpster diving that makes business-people want to cast him in his very own movie but you find out in the end they only wanted the collar in the movie (when you see the movie it's just a zoom-in of the collar).