For some years we have known that Jupiter, Saturn, Uranus and Neptune all have ring systems but recently one of the asteroids, Chariklo, was found to have a ring system as well! Details are at http://pluto.jhuapl.edu/overview/ScienceShorts.php?page=ScienceShorts_09_26_2014
“The discovery of rings around asteroid Chariklo last year - depicted in this artist’s impression - drove home the important message that the solar system is still full of plenty of surprises. (Image credit: ESO/L. Calçada/M. Kornmesser/Nick Risinger)”