Teledu song based on Agadoo. You can just hear the massed ranks of Eastercon goers "Teledu-du-du..."
Posters based on comedians' catch phrases e.g. "Go on, go on, go on, you know you Teledu" or just "Go on, go on, go on, Year of the Teledu". Other thoughts: set of posters along lines above, but more specifically about teledus e.g. "short fat hairy legs?" and "Brain the size of a planet? No!"
Pre-con publicity: Carrier bags! I imagine it's fairly cheap per unit if you get a big order. We can probably find uses for them at-con but beforehand we could drop them in dealers rooms at the likes of Eastercon.
What about beer-mats? Fairly cheap again - probably not as cheap as carrier bags but better from a waste point of view. Could even be used at the con if there are some left over.
Playing cards would be a nice idea, since if you give them out at conventions people might play with them on the train home if they're travelling in that way... John Coxon