Getting called up for jury service.
I know a lot of people regard it as a Right Royal PITA - particularly if they’re working and depending on their work circumstances. However I honestly think it’s a really important civic duty and important to do. A lot of people bust their A to get out of it and I think that’s a shame and possibly too easy to do.
The call-up mechanic has been discussed here in the past - and it’s screwy to say the least. I worked with people in their 20s and 30s who had been called several times. OTOH I was called once in 1974, when I was 22 - and have never been called again. Doesn’t seem to be a truly random process.