Matt 5:16
In the same way, let your light shine before others, that they may see your good deeds and glorify your Father in heaven.
When folks spend all their time at church and church-sponsored activities they tend to not see other means of evangelism as plausible. How else would they interact with the unsaved?
There are options.
Get to know your neighbors. Lend them a hand if they need one. When a neighbor is hurt or sick, bring them over dinner for a while. If they are spending Christmas alone, invite them to your house so they can see how you celebrate the Savior.
Coach a community sports team. You get to meet lots of families this way and provide a positive influence for kids. My pastor recently mentioned this as a great avenue for evangelism.
Volunteer at a shelter, food bank, or food kitchen. You will interact with the unsaved a lot.
Instead of spending all your time with those at your church, get out into the community and let your light so shine before men that they see your good works and how they glorify God.
My pastor has recently introduced these evangelism programs to our church and is currently seeking volunteers. I have not seen these programs in action yet:
ERC Promo Video
Global Media Outreach - Become an online missionary