I am getting my gear ready to experiment with Keyes 34 Piece Sensor Experiment Kit.
The kit features pretty much all the sensors you can think of. It is ideal for robotics but can be a great aid for Physics, Biology, Meteorology, etc. A great tool for STEM and cross curricular activities.
It was originally designed for Arduino but found its way to the Raspberry Pi fairly easily. There is a GitHub resource just for the Pi from SunFounder that should give me a good base to come up with a few examples to show the full potential of the Kit.
This PDF provides a good overview of what each sensor is for and this link shows their pinouts.
If you have any ideas for small projects you are welcome to add them in the comments below.
Stay tuned for updates!