How to Influence Without Authority

i've organized designs sprints, where i get designers and all the key decision makers into a room just to have a massive brain storming session. Another thing that i've done is convincing people from other teams to spend twenty per cent of their time working on my team's projects. So if you have any other ideas on how to influence without authority, i love to hear it. Fe'll free to leave a comment or reach out to me. If you have any question, you can also message me. Enlydon or emil me, as my emil is shrown on the slight here.