James:
-fiddles and fixes glasses, even when their fine..
-runs his hands through his hair (he thinks it also looks cool but his hair is always everywhere so what does it even matter)
-polishes his broom, again and again and again (not that broom, God Sirius)
-wrings his hands (especially when flirting with a certain redhead)
Sirius:
-Bites his damn lip (which has the unfortunate drawback of ridiculous attractiveness)
-pulls on his collar (showing off his ridiculously toned arms and them collarbones)
-punches James or whoever is near by in the arm
-Laughs ridiculously loud
Remus:
-chews his lips (very different from Sirius’ lip biting)
-runs his hands up and down his legs
-scratches his inner arms when it’s really bad
Peter:
-Joins the dark lord
– Betrays his friends
-is a huge prat
-dies
…