Here are the teams, please add to list if any where left out

Arkansas - sledgehammer
Arkansas State - "I Will"
BYU - Tan Cougar and Blue Cougar/"HC"(Used only on Throwback helmets)
California
Central Michigan
Clemson - Paw Print
Eastern Michigan
Florida State - Tomahawk (tomahawks given for academic achievements have "ACADEMIC" written up the handle of the tomahawk)
Fresno State - White Bone, Yellow Bone, and Black Bone
Georgia - White Bone (football excellence) and Black Bone (academic excellence)
Kentucky - Wildcat Paw
Louisiana Lafayette - Cajun Pepper
Louisiana Monroe- Star/Warhawk foot
Michigan State - White Block 'S'
Middle Tennessee State-Pegasus logo
Northwestern University - White Wildcat
Ohio State - Buckeye Leaf
SMU - Skull and Crossbones
Stanford - Axe Blade
Temple - Diamond
Toledo- Yellow Rocket and White Rocket
Vanderbilt - Ship Anchor and Black Star