doofer
/ˈduːfə
/noun informal
An object or device of unspecified name or nature.He can turn most TVs off with a handheld doofer that he carries in his pocket....
- Some vandals had thrown something onto the electric doofer on the top of the train.
- I picked up the doofer and clicked the Menu button.
Origin
1930s: perhaps an alteration of do for in phrases like that will do for now.