American Conservatives of Color started having a booth at Cinco de Mayo a few years ago. Help Casper Stockham and friends staff their double wide booth with games for kids and visit with the parents. E-mail Casper for details and sign up at:
Look for various GOP groups to be represented at Cinco de Mayo including:
Colorado Hispanic Republicans
There may be other organizations that could use your help with staffing booths or fundraising for brochures or goodies.
Talk your state representatives into attending.