If they did, it would be next to impossible to prove what they were.I have a question for proponents of Sola Scriptura: did the Apostles teach and practice anything in their years of evangelizing that is not contained in the Scripture we possess today?
I think people underestimate the centrality of Christ as the Son of God. We take that for granted these days, and would rather spend our time talking about tertiary issues, dogmas, traditions, whatever, but in the Apostle's day, the Gospel was the bread and butter.
When people hear words like "tradition" or "teaching", the kerygma, they import more into that than what would've been the focus of the Apostles in their own context. Keep in mind that they did not have this Platonic mindset where you rationalize your way up and stack metaphysics upon metaphysics, endlessly crafting a theology. For them, the faith was once for all delivered. Jesus is the full revelation of God and the fulfillment of the Old Testament.