We All Do It Together

Several people all take part in some critical action by taking hold of a weapon or object -- normally used only by a single person -- that is key to the action.

Depending on the implement and the situation, this can be a subtrope of Improbable Use of a Weapon.

Anime and Manga

 * At the climax of the first season of the Sailor Moon anime, the spirits of the Sailor Senshi all join Usagi in casting through the Moon Wand by grasping the wand with her.

Fan Works

 * In the Harry Potter fanfic The Arithmancer, Harry and Ron join Hermione in driving the basilisk fang through Riddle's diary at the end of their second year.
 * In this vignette from the unfinished Mega Crossover Girls, Girls, Girls, Skuld, Rin-rin and Kaolla Su together throw a massive switch to activate an improved and empowered Robe system for the Otome of Mai-Otome.