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.