How to effectively conduct the recruitment process for work?

In connection with the development of my company, from time to time I am looking for employees for individual teams. I already have proven advertising portals, but I am considering new techniques. I have heard that some companies, for example, assign tasks related to the position, conduct personality tests, or have trial days. I wanted to consult with you about what works. How did your job interviews go? What pleasantly surprised you, and what was a complete exaggeration? How is the recruitment process best conducted from the perspective of a candidate? I have not participated in recruitment for a long time, so I am a bit out of the loop and I only know about it from theory or from the employer's perspective. :) Please share your comments. Thank you.