I think the reason why there are vague and mixed answers is because it really depends on the student committee and the people interviewing you. They might factor your undergraduate grades or not even consider them. It really depends. But, I definitely do think that firms have hired people with bad undergraduate marks because what matters at this point are your law school grades and experiences. The law faculty has already 'vetted' students when they admit them.
During my interviews, I saw them flip through my undergraduate transcript, but they didn't ask me about it at all even though I had a few withdrawals and a declining GPA. They looked more at my law school transcript and asked me about the courses I took in law school.
I'm not on any student committee, but my understanding is that while firms request all your transcripts, they focus on your law transcript over your undergraduate transcript. It might be something a student committee considers as a tie-breaker between two candidates who are equal in all aspects. Take note, this is all speculation from my end.
When I was going to recruiting events in the UK, some of the best ones that I got were portable chargers, headphones, cardholders, coffee cups, and travel bottles. Highlighters, sticky notes, flags, and notebooks were also highly sought. One of the worst ones (in my opinion) was a chalkboard mug. It was handy, but it was really useless and unnecessary.