When I was about 10 (1994-ish) Polypipe had some sort of corporate do at Hillsborough
As my Dad dealt with Polypipe through work and knew some people quite high up there, me and my Sister went along with my Dad
I ate quite a few fresh cream eclairs before going on a full tour of the ground
Saw everything from the Changing rooms, Boardroom to the Trophy cabinet and got told dozens of anecdotes from the groundsman who showed us around.
On returning back to the suite where the exhibition was been held there was a raffle for some signed stuff, I won second prize, a Signed Ball!
I only wish I was older as I can't remember a great deal of the tour