Pretty simple one.

My phone is one - I often give my partner a lift to her work, to appointments and the like and the phone has become the perfect time wasting device when I'm waiting on her. Music, podcasts, games, audiobooks. On a training course with business, never alone with a phone.

In the kitchen, a mini chopper. Don't have space for a full sized food processor but regularly make soups and one mini chopper worth is one bowl worth in the end, but also pastes, mayo - use it for so many thing and much more convenient to use than a food processor.

What other ones could we add to the list?