On behalf of v8mikey, I did ask why Palitoy never made a tennis player. Apparently, it was never really considered, but in any case the hard hands weren't really made to grip a tennis racquet!
There were some interesting talks from museum staff at the start of the event, including tips on photography from the lady who photographs the museum objects for the archive on the website. I was particularly interested in the talk on plastics, why they degrade and what you can do to prevent it. Not much seems to be the answer, but the key to preservation seems to be mainly to keep the objects away from light, temperature fluctuations and air (oxygen) if possible. Just as well I don't display mine then!