Welcome to the forum.
Responding to the title of your question, before reading anything else: "Can a vibrator spread stds?" Sure, this happens all the time, especially among lesbian women. But only if the vibrator (or other sex toy) is shared more or less immediately during sex. After a few minutes, and certainly after any secretions on the vibrator have dried, there is no transmission risk of STDs by any inanimate object.
Now having looked at your question, there is absolutely no risk for HPV or anything else. And no STD can ever be transmitted through clothing -- even if the vibrator were still wet with genital secretions from a previous user.
So no worries at all here. Don't give it another thought.
Best wishes-- HHH, MD
Thank you very much, I cant' tell you how happy I am for your quick response.