Probably the single purchase that's had the greatest impact for me was my Bose noise-cancelling headphones. That was quite a while back, as they're the QC-15. However, they still work great and I still use them often.
Yeah, noise can have a detrimental effect on wellbeing. I've never tried active noise cancelling headphones but my 3M Peltor X5A headset earmuffs are a lifesaver.
They're big and not the best for very extended periods, but when you need some relief from a noisy environment for a while they really help.
They're big and not the best for very extended periods, but when you need some relief from a noisy environment for a while they really help.