Sonic lipstick

The sonic lipstick was a device regularly employed by Sarah Jane Smith similar to the sonic screwdriver owned by the Doctor, while resembling a real lipstick closely enough not to seem suspicious.

History
The Doctor had left the sonic lipstick for Sarah inside a sliding panel on the side of K-9 Mark IV. (Sarah Jane Adventures website)

In the episode SJA:Enemy of the Bane the Sonic Lipstick is destroyed by Sontaran Commander Kaagh after deliberately stepping on it causing it to smash. At the conclusion of Part 2 she reveals she has another saying to Rani - "Do I look like the kind of girl who carries only one lipstick" which she then uses to destroy the Tunguska Scroll

Features
It generated a pinkish-red light when used. Like the Doctor's sonic screwdriver, it also remained ineffective against deadlock seals. The Slitheen described it as a sonic disruptor. (SJA: Revenge of the Slitheen)

Uses
Sarah Jane had used it to open and close doors, send an electrical charge, and cut cables. She claimed she could destroy the Gorgon's portal key with sonic disruptions from the lipstick, but this may have been a bluff. (SJA: Eye of the Gorgon)

She later used it to interfere with Mr. Grantham's comms device causing a very high-pitched noise. (SJA: Warriors of Kudlak) She does this again to UNIT soliders. (SJA: Enemy of the Bane)

Sarah Jane used the device to get through a door and escape the testing of the reality bomb. (DW: Journey's End)

She disables a cloaking field on a sontaran ship. (SJA: The Last Sontaran)

Sarah Jane destroyed two sphere-shaped drones. (SJA: The Last Sontaran)

De-activated Kaagh's control device. (SJA: The Last Sontaran)

She uses the lipstick to cut a piece of meteorite and later shatters a glass mirror. (SJA: The Day of the Clown)

Sarah Jane disables her parents car engine. (SJA: The Temptation of Sarah Jane Smith)

Mark II
The Mark I was destroyed by commander Kaagh standing on it. (SJA: Enemy of the Bane) Then Sarah Jane Smith had another Sonic lipstick in her bag, using it destroy the Tunguska Scroll and indicating that a girl can have more than one lipstick. It's unknown if the Doctor built more than one or if Sarah (perhaps with the help of K-9 or Mr Smith) made a duplicate.

Uses
Destroyed the Tunguska Scroll. (SJA: Enemy of the Bane)

Teleported a Slitheen back to it's home. (SJA: From Raxacoricofallapatorius With Love)

Destroyed a commnicataion system. (SJA: Prisoner of the Judoon)

Smashed glass. (SJA: Prisoner of the Judoon)

Use it to relese the Nanoforms into the genetic system. (SJA: Prisoner of the Judoon)

Behind the Scenes

 * Character Options released a Sonic Lipstick replica featuring lights and sounds. The toy was slightly different from the original, in that the ridges in the actual prop are less deep (SJA: Revenge of the Slitheen, The Last Sontaran) and the coat was shiny metal rather than bland brown plactic (SJA: Revenge of the Slitheen, The Last Sontaran)
 * The origin of the sonic lipstick, while given on the SJA website, is not mentioned on screen. The closest reference occurs in Invasion of the Bane when Sarah Jane invokes the Doctor's name when using the device.
 * Its been hinted by many fans that her sonic lipstick went reder when Androvax was inside Sarah Jane.