Consider the humble match. For generations, people have been burning their fingers as they took longer than expected to light their log fire or their birthday candles.
Today’s invention helps avoid these injuries.
The sleeve of the matchbox would have a thin coat of silver foil on one side (grey). There would be a cut-out indicating a safe place to grip the cardboard of the device (pale blue).
Inserting a match through the holes shown allows the match to be struck on a rough surface, and held whilst burning for longer, but with no subsequent danger to the fingers.
(‘Safety’ matches would be sold two boxes at a time, so that the special sandpaper on the second box could be used to spark ignition.)