A great idea Alex. Fine moter skills are so important for so many subjects and tasks for school and life, from hand writing, drawing, modelling etc.

Are you thinking of 3D printing or something more traditional like clay / ceramic pieces?

Let us know what we can do to assist. 

Kind regards,

This is a great idea.

vibration is not necessarily the right path for positive reinforcement as it could be surprising or alarming to small children. It might be a better idea to consider either an auditory or visual response or a combination of both.

Additionally, physical resistance would be highly beneficial. Perhaps a large button to push that is connected to a mechanical linkage  that produces some resultant movement. This will help improve both the cognitive and the motor development. Making the mechanism visible will make the action more engaging and, as the child grows older, teaches the relationship between cause and effect. Mechanisms should however be shielded by a transparent cover to prevent injury.

Sliders are another great way to help develop fine motor skills, especially if the part to grasp is slightly smaller so that some focus is required to grab it.

Another consideration with toys like this is pieces getting lost. It would be great if the pieces could be somehow tethered to the main toy body. This does unfortunately lead to the problem of tangling. Perhaps some thought could be invested to find a suitable solution.

There are a significant number of products that cater to this issue. Research will have to be done to ensure your idea doesn't violate any existing patents.

Hope that helps

Willem (CQ Uni engineering student Bundaberg)