I suppose I will out myself as a bloke and say as a kid I was unhealthily obsessed with Dinky's pink Lady Penelope Car, and Corgi's James Bond Aston Martin DB5. Largely because, just as I got interested in getting them, the makers discontinued them, so it was like they both became the holy grail. It wasn't like today where you could just pick 'em up on eBay!
I loved the way they looked, and the ingenious hidden gadgets. It seemed to flick a switch in my brain. It was like having a crush on an object.
The only other comparable toy might be Corgi's Batmobile, that was great and every kid in the playground seemed to own one - but it was always available.
I imagined stumbling across some forgotten Bagpuss-type shop, maybe on a family holiday in a seaside town, where they might sell one...
Rather like the girl I was nuts over at college many years later, there was the sense that once you got what you wanted, it/she would probably cease to be of interest.
After two years of asking, the toy shop phoned to delightedly inform my mother that they did indeed have the James Bond car in stock. However, it turned out to not be the Aston Martin from Goldfinger/Thunderball but the white Lotus Esprit from the new film, The Spy Who Loved Me. Disappointment.
Later on, within a year or so, Corgi did reissue the grey Aston Martin DB5 - only without the tyre slasher or revolving number plate gadgets.
Even now, you can't pick up a decent condition Lady Penelope Car on eBay for anything less than £300 or so, they are mostly chipped and battered, as mine would have been if I'd ever got my hands on them.
Sorry, I can't really sleep tonight, hence all this.