Not really on board but what about those big cardboard cut outs with stickers on for the seats--point out what you want from whats elft and the check in folk then stuck it on your boarding pass.
.Also on some flights they still gave out boiled sweets to suck and help with the pressure changes, would have suited EZ as they were usually orange coloured barley sugar - that would be the catering nowadays.
You couldn't go bowling in the terminal but there was the Airport Bowl on the Bath Road on the north side of the airport-was it next to the Arial Hotel (the round one)