Tricks during oral? Guys and girls?

Collection of related topics on Vibrating penis ring:

Which gets better results?
which seems to get better results penis pumps, rings, or something else (please explain)

Best anal plug with ring?
My partner and I have a puppy play dynamic, and we'd really like a little waggy tail but they're all really expensive. Instead, we are having a friend

Cock Rings...Do they really work?
My wife decided to pick out a few good choices from EF a few months back and we decided to try all three for shits and giggles to see if either of...

Is it good to use it before intercourse?
I am just wondering if it is good to use penis rings before intercourse from prolonging point of view. any insight is much appreciated. thanks

Battery Life and Replacing Batteries...
These cock rings seem to have a pretty small battery. Can you replace the batteries or are they a one time thing? Is it worth it?