Keep anything that can burn at least 3 feet from space heaters and fireplaces
Added
Before heating season, clear a 3-foot zone around space heaters, fireplaces, wood stoves, radiators and candles. Turn space heaters off when you leave the room or go to bed, never heat the house with the oven, and have heating equipment and chimneys cleaned and inspected by a professional each year.
The result
Result: U.S. Fire Administration: heating was the second leading cause of home fires in 2021; portable heaters were 3% of home heating fires but 41% of fatal heating fires (2017-2019).
Source
U.S. Fire Administration (FEMA) (opens the original source in a new tab). Check it for the latest numbers before you act.