Is and always will be a Cadbury Creme Egg. Could easily put away two for breakfast without the need for toast. There's this big one now! https://www.bbc.co.uk/news/articles/c39jvll7yewo (Just the one of these for me for brekkie!).
Over-packing tip: Whatever clothes you've packed, half it and it'll be the right amount (it'll also create space for you to bring nice things back from your trip).
Future features for mobile devices would be very low power consumption and with ultra high capacity batteries so that the device would last for months instead of days. The battery would be solar power recharged from the screen of the device so that i...