A micro drone ($30+) or mini quadcopter can be flown indoors or outdoors. Sometimes, they are equipped with cameras for capturing good footage or flying with FPV.
Ranked in these QuestionsQuestion Ranking
Pro Very entertaining
Micro drones are futuristic and very satisfying to fly.
Con Short battery life
Batteries usually take 1-2 hours to charge, but only last about 5 minutes. Many drone users prefer to use multiple batteries in one session.