Though the Bradley "Brave" mascot will never again be officially affiliated with Bradley, memories of it will last a while. I have a few old shirts, sweatshirts, and athletic apparel that show variations of the Indian.
And though Chief Illiniwek was retired by the University of Illinois officially in February, 2007, the Indian chief is still around as alumni are keeping him alive.
An officially registered non-profit group named the Council of Chiefs, made up of former students who have portrayed Chief Illiniwek still selects one student each year who appears at athletic events in the crowd, but does not perform.
http://chicago.cbslocal.com/2012/04/20/wisch-non-profit-group-unveils-new-chief-illiniwek-logo/
There are several organizations that are working to keep Chief Illiniwek's memory alive-
http://www.uofiwiki.org/wiki/Students_for_Chief_Illiniwek
One of several Facebook pages, this one with over 50,000 likes-
http://www.facebook.com/pages/Chief-Illiniwek/159958548143