What is a good idea for a simple solar powered toy?

Question

I am going to create a solar powered toy for kids under 14 and am searching for ideas. Any input would be appreciated.

Answer 1

Goo ball thing

light sensor .

Sound sensor .

Color changer .

Caterpillar tracks as landing pad.

It could interlock with other ones if it had a sort of geometric

shape.like a tripod'y alien'y sort of  with  mobile solar docking station thing

Or a nice simple organic mathematical shape with a light in.

There could be a bath toy version .

If something could sense what was in the bath water it could serve

as a bath alarm.

The base unit with caterpillar tracks would be the landing pad and could have the solar power grid attached and could have features such as opaque tracks or another light .

Tracks can have interesting shapes incorporated in to them.

and could be opaque.

A  feature could be a sensor that engaged an evasive maneuver to avoid been stepped on.