Going out to buy one of those little, brown, cylindrical, bayonet-fitted Bakelite plugs, in order to plug some small electrical appliance into the overhead light fitting in one's bedroom. Also one could get multi-socketed adaptors of the same design, in order to plug things into the light socket while still having the light on. Liable to end up blowing the house fuse if not careful about the wattage of what one was plugging in!
Another thing - going with mother to our local station in South London, not to catch a train, but for her to visit the coal merchant’s office in the goods yard to order our heating fuel for next winter.