Digital multimeter as in testing voltage, amperage, etc? I used to have a non-contact voltage pen and I found it pretty useful for testing for live wires, mostly when drilling into a wall but also useful for other things occasionally. It was a cheap one off ali express so one day it just stopped working and I never ordered a new one.
It had a screen for the voltage but I only ever used it as a yes or no measurement. I probably wouldn’t trust equipment worth a few dollars to be accurate, but I do see that ali express sells digital multimeters for not that much money.
I know nothing about hobby electronics, what sort of situations are they needed?