you might have done STAR without realising it. If it's done right, it can be like a proper conversation. a 'STAR' answer is basically along the lines of 'I used to work for this organisation. One time we were trying to do this. I was responsible for that element of it, this is how I did it, this is what a success it was'
sometimes the 'success' can be that nobody outside actually noticed you'd done it - i've got one i use now and then that involved dealing with a monumental balls-up (of another organisation's making) that i sorted out in a way that the actual service users didn't notice anything had happened.
interesting - not sure i'll try that one, though
at one interview, the one when i went back in to full time work after a couple of years of part time / temporary things, i said something like i'd been looking for a while, but much of what i'd seen was either places i didn't want to move to, or organisations i didn't want to work for, which seemed to be an acceptable line of bullshit as they offered me the job...