I have bought loads of crap tech from eBay from usb Flash drives that are meant to be 256gb that turn out to be 4gb, rc cars to drones, led charging cables, smart watches, power banks, battery cases lol the list does go on and does include fidget spinners/cubes unfortunately
Most recent was a hat that had speakers built in (which were connected by wire) needless to say when I put it on my head it stretched and broke the wire - rendering it as just a hat with annoying hard plastic in the ears lol
Not that it stops me as I hope the next purchase isn’t too good to be true.
(I’m just glad I haven’t won lottery as my house would be full of pointless/broken things)