I like to visit colleagues classrooms and learn from them as they teach. This happens across our district where teachers visit other schools to watch and learn.
I also attend conferences when I am able. Locally, if I volunteer in some way to help with the conference, I am usually able to get free or reduced registration, which is always a bonus!
I always try to accept the invitation to host a student teacher. I am always learning from new teachers as I mentor them. I also try to attend as many professional developments as I can so that I can stay current. For example my school district has programs called Canva and Book Creator. These are both new and my students like them.