Wave the new kid over. Being the first person who did is a thing people remember for years.

Arriving somewhere new, everything is noise until one person makes a gesture. For them, the first few days are a long wait to find out whether anyone will do it, and the smallest acknowledgement is enormous because it ends the waiting. For you it is two seconds of mild social risk. The person who moves first gets remembered for years.

Find whoever is standing slightly outside a group this week and wave them in. You do not have to befriend them or keep it up forever. One gesture that ends somebody’s first week alone is worth more than it cost you.