1. Steal all his cats
2. Get Grell to come over the manor everyday
3. Kidnap Ciel
4. Dye all of his uniforms pink
5. Make Pluto to cause more trouble ( for example get Pluto to breathe out fire to set the trees on fire)
6. Show him ClaudexSebastian
7. Show him GrellxSebastian
8. Keep reminding him about how he can never eat Ciel's soul
9. Steal his catnip tequila
10. Mainly do #9,1,and 2