I had a brother in law who worked in Rowntrees before Nestle took over.  He used to bring home all sorts of souvenirs.  I might even still have a Minties diary here.  I wonder whether that'd be worth money?

All ephemera is worth money.     Sometimes big money.

You just have to get the right person on the right day. 

(two people would make it better though) 

I have an old windsurfer race sail sponsored by Allens.

Mint green sail with the cool mints logo on it.