They heat up when plugged in but I can't vouch for electrical safety. The first one can be used in radiant or convector mode. Of course, we all know electric heating is expensive, but they could be useful for an otherwise unheated room or conservatory or garage/outbuilding.
(2 others have been taken)
Convector-radiant electric room heaters (Canton CF5)
This offer has been gifted to someone and is no longer available.