1. Toys
   1. WowWee
   2. RobotCub
   3. Lego
2. Warfare
   1. UAV
   2. MUAV
   3. UCAV
   4. Underwater UAV
   5. Swarm robots
   6. Snakebot
3. Factory
   1. ???
4. Household
   1. Vacuum cleaner
   2. Flor washing
   3. Other ???