Hi blue thunder,
Hearing protection might definitely help you feel more centered. Too much visible sensory input can be eliminated by closing your eyes. As I can't shut my ears, good hearing protection is my most important tool in creating my own comfortable sensory bubble.
I would also like a pair of noise cancelling headphones, but good ones cost hundreds of dollars.
Far more effective is a good pair of earmuffs.
I strongly recommend the 3m peltor X5A. These have the highest possible NRR of 36 or 37dB, are affordable at +-30 dollar, and are easily available in stores/online. I also like the evenly distributed mild pressure on my head. It's very comfortable and comforting in my opinion.
People might be hesitant to make contact with you while wearing earmuffs. This may or may not be a desired effect.
In public I use custom molded musician earplugs, as they aren't as obvious. I can still perfectly communicate but it takes the painful edge and imminent feeling of panic off of passing motorcyclists, emergency vehicles with sirens...
BEWARE:
Don't use sensory dampening stuff 24/7. U WILL get used to it. This self created addiction might make it impossible to go about without it. I experienced this first hand. Try to pause the use of them every now and then!
Hope this was of some help.
(I'm still in search of an affordable weighed blanket so can't help you with that).
_________________
Your neurodiverse (Aspie) score: 186 of 200 Aspie Quiz Your neurotypical (non-autistic) score: 15 of 200
You are very likely neurodiverse (Aspie)