The weirdest thing about my local car boot sale today was that second-hand robots now outnumber record players that can cope with 78rpm disks.
No Roombas, though — they didn't go on sale in the UK until relatively recently and they cost an arm and a leg. It's the fashion-accessory robots that are showing up, in other words.
(In case you were wondering, I picked up a nice pair of speaker stands for the library. That is all.)