There are several local services SSDP Discovery service, Universal Plug and Play Host service) allow any authenticated user to configure service. It makes it possible to specify executable file and elevate privilege to Local System.
HP Software: "Pml Driver HPZ12" (HP Printer Laserjet 4200L PCL 6)
Audodesk: "Autodesk Licensing Service"
Dell Power Managment Software for network cards: "NICCONFIGSVC"
Macromedia: "Macromedia Licensing Service"
Zonelabs.com TrueVector Device Driver: "vsdatant"
C-Dilla Software: "C-DillaCdaC11BA"
Macrovision SECURITY Driver (Security Windows NT): "CdaC15BA"
Macrovision SECURITY Driver (Security Windows NT): "SecDrv"