Loverings; commonly known as cockrings
So when cy-v and I were in Aachen together with hecubah we went into the Beate Uhse store there, and Samantha and I bought a lovely little cockring from Fun Factory. Stretchy and black, it's shaped like a bat. The past few days we've had serious doubts as to whether it would fit, but luckily, it did. It's so stretchy, I hardly noticed it. Samantha did, however and came three times in about 5 minutes. :-) The last time, I came too, and only then it started to get unpleasant to the extent where it started hurting.
At only 12 euros, it's certainly a lovely little device. =)