I was greatly encouraged through involvement with the campus ministry at the "secular" universities that I attended.
I was involved with Chi Alpha Christian Fellowship. It was a "church" fellowship on campus. We met often for times of worship, prayer, Bible study and evangelistic activity. One night a week (Thursdays), we would meet together in a large upper room on campus for worship, study of the Word and even the breaking of bread.
We would hold prayer meetings on and off campus. Bible studies were held in various places (some for guys on campus, girls on campus, guys off campus and girls off campus). We even held meetings outside in the main campus quad. We saw many students come to Christ and many others experienced quite a bit of spiritual growth.
In fact, I would go so far as to say that the campus ministry was more of a reflection of the Church as described in the early parts of the Book of Acts than anything that I have ever seen.
I have several close friends who came to Christ and have continued walking with Him as a result of that simple ministry on campus. During college, I felt the leading of the Lord to be involved in that ministry...and I have never regretted it.