Hey cryptovestor!
Your number one potential catalyst is Bitcoin hard forks. I can also see that hard forks can lead to more traction and price action - at least I remember times where it seemed to be the case (expectation of Bitcoin Gold and Segwit2x). Now, however, there are numerous Bitcoin forks, and the number alone seems to make each of them less significant. Here you can see a post with all the current and upcoming forks: https://steemit.com/forks/@smallstepschange/651qu6-bitcoin-forks-latest-overview-forking-dates-block-heights-distribution-ratios-official-homepages