HP wizards use wands as all-purpose tools. They're the Gold Seal baking flour of magic. The one special utility item that comes to mind is the Time Turner. (Which could have ended the book easily if Harry had done with it what
Torg did with the one Homogenize Milktoast had.)
Dresden wizards mainly use staffs but other items like Harry's blasting rod and kinetic energy rings are special purpose tools.