Observe every corner of your apartment by moving your camera along a rail that runs through the rooms. Find and take pictures of paranormal anomalies to exorcise them. Locked in your surveillance room, will you survive tonight's 8 rounds?
I still remember a girl at a party encouraging everyone to do that thing where you re-breathe the other person's exhale. She said it was to get higher but I think it was also a social lubricant.
Doesn't sound like a thief to me. They never stick around. Sounds more like someone being careless with their jacket.