..but after becoming an adult, realise they may not be so..

Walnut Whips - not sure that these even exist these days, but I used to marvel at them (through the shop window) as a kid. One day, I thought

Imperial Leather soap - dunno whether it was the sticker, the name, not sure in fact, but this STANK of luxury as a kid. 3 for a quid in the Poundshop, as I found out yesterday

Let me know other stuff, if you like