What's funny is, I LOVE spellcasters... but I don't go crazy using their powers. I could live on Potion of Plentiful Needs, but I don't, I prefer to eat, sleep, and shower normally, and those potions are just an emergency backup. Same thing with Delicioso- I only conjure food if cooking would be really inconvenient at the moment.
Now I do use Scruberoo a lot. And I always set my spellcasters to Always Transportalate as soon as they learn that one. Potion of the Nimble Mind comes in handy a lot. And LittleMsSam's CC spell Upgradios- you can fully upgrade an item with one spell. My spellcasters usually don't learn Handiness at all, unless they help their teens with the electricity project.
And when celebrities start Inciting Cheers, I love tormenting them with mischief spells. Take your pick, anything under the Mischief category.