
Volunteer dependent organizations can reward and recognize their volunteers with an end-of-summer bash using a luau theme. This could be strictly a thank-you party or combine it with a fund-raiser and awareness builder in the community.
Hold events like a hula dance contest (who can hula the best or longest), a hula hoop contest, a limbo contest, etc. Have promotional surf boards they can decorate and judge them. Use all the trappings like grass skirts, leis, luau cups, etc., Give volunteers imprinted Hawaiian shirts to commemorate the event.