Almost ten years ago, I bought this little item from Amazon:
Yosoo GM328 LCD Display... https://www.amazon.com/dp/B00OOQC2E8?ref=ppx_pop_mob_ap_share
It has been a brilliant investment. Identifies #resistors, #capacitors, #FETs, #MOSFETs, #diodes, ... Just about any kind of simple #electronic #component, including bi- and unipolar #semiconductors, I've plugged into it.
@foone