DIY Marble Run: COG Coaster Rattles & Teethers A rotary knob that is

A rotary knob that is used to enter the password to open the box

visual and auditory feedback: rough

Guided by a friendly page-hopping cat

Material: Paper

Requires keen observation

DIY Marble Run: COG Coaster Rattles & Teethers A rotary knob that isMarble Run Make your own Marble Run with this awesome kit! Great activity for both children and adults. Improves motor, cognitive, and emotional skills. DIY Assembly wooden puzzles No tools or glue necessary. Use for educational purposes, as collectibles, and or decorations Laser cut wood Assembled Size: 254 x 232 x 165 mm. Package Size: 317 x 233 x 46 mm. Puzzle Pieces: 233 pcs.