MarbleMover by WillemvD

...marblefun by willemvd thingiverse https://youtu.be/hrd8kk79cdc your (grand)children will love it!

...three in a row by willemvd thingiverse three in a row classic version.

...istling propellor by willemvd thingiverse https://youtu.be/qjzllndmnp4 a two component sound generator. works on a toy dc motor.

...y willemvd thingiverse printed buckets full of candy, carried by the robot. the kids will have fun. https://youtu.be/sd_6ownlv54

...static candy dispenser by willemvd thingiverse hopefully you do a better paint job.

....thingiverse.com/thing:606963 add a spoon holder and a place to put the shells and your easter table will look like never before.

...thingiverse a marble in orbit... https://youtu.be/reivgsk-oai a drop of oil on the four contact points and the tip of the rotor.

... by changing the parameters in the sketch, different patterns are generated. the disk is cd size and fits on a 5mm stepper shaft.

...be simple 3d printed walking mechanisme. the frame sizes depend on the gearwheels and geared motor you have "in stock".