Custom Part

Custom Parts are items found in Super Smash Bros. for Nintendo 3DS and Wii U. They can contain Equipment, Custom Moves, or hats and outfits for Mii Fighters.

Description
Their appearance changes depending on which Mode is being played, however they all share the wrench icon.
 * In Smash Run, All-Star Mode, and Home-Run Contest, they appear as white bags with a yellow wrench icon.
 * In Trophy Rush and Target Blast, they appear as green pentagons or circles (respectively) with a white wrench icon.
 * In Classic Mode, they appear as red wrench icons in the prize slots game.

Trophy (SSB3DS/WU)
''The white bags with the little wrenches on the front contain custom items you can use to give your fighters that extra "oomph." Maybe you'll find a new special move inside for one of the fighters, or a hat or outfit for your Mii Fighter. Either way, open all the treasure chests you see and defeat lots of enemies in Smash Run to get them!''