Peltier-Seebeck is still in use- processor coolers in computers, and the cute little fan that sat on the stove of the narrowboat and blew the air about when it got warm, until someone banged into a lock and it fell off and broke.

But bubble memory, the steam tables (and log and trig tables for that matter), GTO thyristors, Strowger switches, Karnaugh maps, rub- on PCB transfers (2x and 4x size), A4 XY plotters, *FX graphics commands, the column mounted manual gearstick, Trafficators, starting handles, bus and milk tokens, Sparklets powered corkscrews, artificial cream makers, hand meat mincers, Redex, Bri-nylon, Liberty bodices, Jumping Jacks, tub washing machines with roller wringers, gas pokers....