I have a much bigger kitchen than my mum ever had (just down to her living in a crowded city with small flats), so we have way more random gadgets than she ever had.
BUT she once got given a salad spinner to get the moisture off your salad leaves. You put your washed salad in and it spins around like a washing machine (and it's almost as large as one!) Biggest waste of space ever in her tiny kitchen but she kept it and still uses it occasionally because, she says, "it's a good French brand"