Some people might remember this. About 20 years ago, we set up a stand for antivirus, themed around Dr Who. We got permission from the BBC for this, but we weren't allowed to have a Dalek (because Daleks don't belong to the BBC). And we weren't allowed to have a K9.
It was bad enough not being allowed a Dalek (but we got a thing that let us do Dalek-like voices - exterminate). But not to be allowed a K9? Insult to injury.
So I led a team down to London to find a good substitute. Hamleys had nothing, but in Harrods, we found something like this.
And when the time came for K9 to take the stage, we brought on our dog-on-wheels, and got a great laugh.
So I was round at grandson.1's place, and when I saw his dog on wheels, it brought back the memory!