The Teasmade
An alarm clock that made you a cup of tea, badly.
Goblin's bedside contraption: clock, kettle, teapot and lamp, all in one slightly alarming unit.
It hissed and gurgled you awake before the alarm even went off, and the tea was stewed because it had been sitting on a hot plate since the water boiled.
Utterly redundant, deeply British, and now back in production because people missed it.
Cost back then
£9 19s
Goes for now
£40–£120 for a working Goblin