Technology-based yuletide shenanigans from the Stableford/Hann/MacCann-era Tomorrow's World (i.e. late 80s). We can't remember much about this, though there was probably a "what happened next" archive round, and much "guess what this is for" jollity. The latter involved some of the 'Tomorrow's World' presenters and a celebrity guest demonstrating what they claimed the device was for and a panel having to guess which explanation was correct.