Stiles: His hoodies. His hoodies always smell like him,and are comfy.
Brett: His lacrosse jersey. You love to wear it so the other guys know who's girl you are.
Liam:His tank tops.(muscle tees) You love to walk around in them and shorts.
Isaac:His scarfs. This guy gets some comfy ones,and stylish too.
Derek:His leather jacket.It makes you feel badass to wear it,and it smells like him.
Scott: His sweatpants. You walk around in them at your house,and cleaning.They are warm and very comfortable.
Jackson:His Car. Let's me honest his car is freaking awesome, and sometimes you have the need for speed.
Peter:His v-neck shirts. They look good on him with his toned chest and all but you love them on you cause they are a little big but you love to have his scent close to you for comfort if you are alone.
Theo: His boxers.When you stay over you wear his boxers to wlk around in,or to sleep in.
Sorry ya'll I couldn't think of anything else for Theo.