Certain embodiments may generally relate to smart robotic therapeutic devices. A modular toy may include a multiple detachable carriages. The modular toy may also include a liquid crystal display (LCD) screen mounted on a first carriage of the plurality of carriages. The modular toy may further include a bubble-generation mechanism installed on the first carriage, a container disposed on a second carriage of the plurality of carriages that is attached to the first carriage, and a robotic arm mounted on a third carriage of the plurality of carriages that is attached to the second carriage.

A slot car track cleaner is provided. The slot car track cleaner includes a housing having at least an upper plate and a lower plate. A ledge may be disposed within the housing. The present invention further includes a plurality of floating weights. The floating weights hang from the ledge. A bottom portion of each of the floating weights protrudes beyond the lower plate. Each of the floating weights slide upwards when a pressure is applied to the bottom portion. A vertical plate is secured to the housing. The vertical plate includes a bottom edge protruding from the housing beyond the lower plate. A cleaning pad is secured to a bottom surface of the lower plate and covers the bottom portions of the plurality floating weights and at least a portion of the bottom edge of the vertical plate.

A slot car track cleaner is provided. The slot car track cleaner includes a housing having at least an upper plate and a lower plate. A ledge may be disposed within the housing. The present invention further includes a plurality of floating weights. The floating weights hang from the ledge. A bottom portion of each of the floating weights protrudes beyond the lower plate. Each of the floating weights slide upwards when a pressure is applied to the bottom portion. A vertical plate is secured to the housing. The vertical plate includes a bottom edge protruding from the housing beyond the lower plate. A cleaning pad is secured to a bottom surface of the lower plate and covers the bottom portions of the plurality floating weights and at least a portion of the bottom edge of the vertical plate.

The present invention provides a model railcar for cleaning, which can remove an oxide film and an oil film from the surface of rails and can simultaneously remove fine metal components, such as metal powder. The model railcar for cleaning comprises: a fan arranged towards a train track; a dust collecting chamber for containing alien substances drawn in by the fan; a cleaning block having a cleaning pad attached to a surface of the model train track, which faces the rails, a member capable of polishing or washing the rails being positioned on the cleaning pad; and a permanent magnet positioned to face the model train track.

The present invention provides a model railcar for cleaning, which can remove an oxide film and an oil film from the surface of rails and can simultaneously remove fine metal components, such as metal powder. The model railcar for cleaning comprises: a fan arranged towards a train track; a dust collecting chamber for containing alien substances drawn in by the fan; a cleaning block having a cleaning pad attached to a surface of the model train track, which faces the rails, a member capable of polishing or washing the rails being positioned on the cleaning pad; and a permanent magnet positioned to face the model train track.

A universal track adaptor system having a shell including a portable device receiving surface arranged for receiving and detachably holding a portable electronic device, said shell further including a track facing surface, a plurality of wheels including a first wheel and a second wheel; a first track adaptor rotatably coupling said first wheel and said second wheel to said track facing surface, said first track adaptor having a specific range of motion, said first track adaptor including an adaptive mechanism operable to adjust a specific width between said first wheel and said second wheel through said specific range of motion, whereby said first wheel and said second wheel can be adapted to interface with a plurality of different sized tracks, as permitted by said specific range of motion.

A universal track adaptor system having a shell including a portable device receiving surface arranged for receiving and detachably holding a portable electronic device, said shell further including a track facing surface, a plurality of wheels including a first wheel and a second wheel; a first track adaptor rotatably coupling said first wheel and said second wheel to said track facing surface, said first track adaptor having a specific range of motion, said first track adaptor including an adaptive mechanism operable to adjust a specific width between said first wheel and said second wheel through said specific range of motion, whereby said first wheel and said second wheel can be adapted to interface with a plurality of different sized tracks, as permitted by said specific range of motion.