My stuffed dolphin and my plushie of Oh from "Home." I got Oh about a year ago and he's very soft. He helps me sleep and I just feel calmer overall when I hug or hold him. He calms my anger, self-destructive thoughts and depression. He also has these curly "nose ears" on the sides of his head that I stim with.
I also really like Disney Tsum Tsums and Itty Bittys (the little plushies from Hallmark stores). My favorite Tsum Tsums are two Dumbo ones, Baymax, Sadness and Gideon from the Japan "Cat" Tsum Tsum set. Dumbo helps me sleep when I hold him in my hand, and the other Dumbo is named "Zizz" b/c he has his eyes closed as if he is asleep. My Sadness Tsum is just really comforting to me....she's been to several Dr's appts with me where they've had to give me blood draws and helped me feel calm while that was happening. I also gave her a pink Hello Kitty hairclip.
My current two favorite Itty Bittys are Dory from Finding Nemo and BB-8 from Star Wars. When I get up in the morning and get ready for work, I usually stuff Sadness, Dory, Gideon, BB-8 and a stim toy or two (usually my pink and purple Tangle) into my pockets. A diecast of Susie the Coupe (the little car in my icon) and a Calico Critters cat sometimes come along, too.
I also have a purple hair scrunchie and a lime green University of Minnesota hoodie that I love....I wear the purple scrunchie around my wrist b/c I like the feeling of something soft wrapped around my wrist, and the hoodie has sentimental value b/c my aunt gave it to me years ago. It's full of holes and tears now, but I refuse to get rid of it or to stop wearing it. I also have a Cars blanket I've had since 2008 that I love and always take on vacations or overnight stays in unfamiliar places.
My scrunchie/hoodie/Tangle toy/Cars blanket are all there for sensory/sentimental reasons, but I think the reason why so many of my security objects are small stuffed animals are because...well, they're my friends. They have all the essential attributes of good friends (as I see them): they smile, they're soft and warm, they love hugs, they listen, they don't make unnecessary noise, they don't try to change who I am, they're always there and always have time for me, they keep me from hurting myself, and they are comforting. They also give me something to focus on/center myself with when I'm in chaotic situations I can't easily get out of. For instance, when I'm in a room full of people and starting to zone out in order to escape the noise, the questions, the feeling of being crowded, reaching into my pocket and squeezing or petting one of my Tsum Tsums helps to bring me back.