Weirdest I've seen was that voter who comes to his voting office, not to vote but to insult The president, The mayor, the volunteer and staff present, and even some of the voters we spent like 5 minutes trying to de-escalate and negotiate Please either leave or vote, but stop insulting everyone and it's finally when the voting office chairwoman took her phone to call the cops that this guy went away. (Thanks for the extra paperwork, because event though the cops didn't have to physically remove a person out of the voting station, we know had to describe the incident in the report, at least it was a consensual decision for every official present)
On more banal stuff I've seen that tall/large gentleman on crutches who put the voting booth down when trying to enter inside.