This is a great project that could provide long term benefits to the parish and responds directly to the need of instructing the ignorant.  Have your group set up a pamphlet table or booth at the parish full of apologetics information and resources for those who want to know more about the Catholic faith.  A project like this does require some funds and also ongoing maintenance so make sure you work with your group to plan for that.  You could also just do it as a one time thing or just during a certain season of the Church.  OSV has some great pamphlets that you can buy or there are also many places online that give them for free with only a shipping a charge.