Within a couple of weeks of acquiring the tram I also found a BBC Doctor Who Police Box Keychain Light which makes a great 00 scale police box when the keychain is removed and certainly not bad for 50p.
Lastly, I found a Classix Pocketbond truck in British Railways livery in the children's toy car box for 99p. Whilst a little battered, a touch up of new paint and addition of a fuel tank (which had been knocked off) made the truck ready for use on Banbury Connections.