Glad you are here.
I’ve worked with all sorts of sensors over the years.
Here’s an article I wrote you might enjoy about workshops I did in 1982 where teachers built thermistor temperature probes they plugged into Apple 2 computers and wrote a 10-line BASIC program to graph the real time data. Turns out many years later I found out they learned so much more!
http://learnmaketeachshare.org/education/2018/11/09/learning-something-new.html
@juliagersey
For now just one more super cool sensor — did you know you can use simple monochromatic LEDs as narrow-band light sensors!
http://learnmaketeachshare.org/sensors%20and%20circuits/2018/10/30/using-leds-to-measure-narrow-spectral-bands.html