I've shown your creation to my daughter Alan! She not keen on electronics but has a great interest in both Marmite and Design. I think it's brilliant-especially the cat litter "ballast". You hoped people would be amused whether they love it or hate it. I think most people will be positive but ironically, if it does generate opposing views then it will [literally] be a "marmite" object-like the brown yeasty stuff itself
Dave