I've been trying to get a some different types of experience in my multiple interview prep sessions. For technical interview prep, I reached out to my mentor to pair on an example algorithm challenge. I asked him to pair with me as he would with someone he's interviewing and we worked through a challenge over screen hero. I was embarrassed at one point because he showed me a ruby concept that I had never learned before! He was very helpful and explained the concept to me and I've been trying to use in in new places. I've also participated in a few Turing-organized algorithm practice sessions and they have been very informative.
For non-technical interview prep, cold outreach meetings have been extrememly helpful. They are not expected to be a formal interview, but many of the same questions come up, and I've gotten more and more confident with those answers. I feel great about my personal elevator speech by now!