What kid of store can I go to, to find the little plastic button-like fittings that go on the Bluetooth earpieces, that keep your ear from getting sore? The one I had has apparently vanished, and I don’t want to have to buy a whole new Bluetooth earpiece just to get the one fitting…
Try Amazon, eBay, or the manufacturer’s website. Bluetooth things are so cheap and so commoditized and there are so many hundreds of different types that it’s unlikely a brick and mortar store would have replacements for your exact make and model.
I’ve bought replacements on amazon. From no-name sellers in Asia mostly. I’ve also bought ones the seller insisted were for my headset model but which didn’t even come close to fitting.
The good news is they’re only a couple bucks apiece.
since you did not state the make ‘n model of your device … really don’t have much to go on. i’d suggest starting with the website of the make … and then branch out from there to walmart o’ amazon 'o ebay. one can find helpful information in the customer reviews … just don’t stake your last breath on something one person says.
i had no problem finding two-inch “ear-cushion” replacements for a cheap sony over-ear headphone set … along the way, i ran into several “ear-bud” replacement sets for the device you are using. in-store walmart replacements might vary … the store i frequent does carry a healthy variety though.
It’s apparently a Plantronics M-70.