I have two big ideas. One is that if they go with the whole Slayer school, multiple Slayer type thing, let Clem become the Mrs Garrett of the Slayer world. He becomes the house mother. He helps them out with their problems, and never gets in any fights or he will die.
The other idea that James and I were kicking around one time was that Clem and Spike get their own sit-com that�s based on the Odd Couple.