Between competition from TikTok, copycat features at Instagram and lost ad revenue during the war in Ukraine, Snapchat is searching for a hot new thing to win users back. Enter the Snap camera drone. The makers of the self-destructing photo app are doubling down on fun camera devices and experimenting with a new flying mini-camera. In an effort to render the selfie stick obsolete with drone technology, Snap’s compact device, called Pixy, works with several preset flight programmes, Snapchat co-founder Evan Spiegel announced on Thursday. The camera drone follows you around, takes photos and vid…