Another happy ear plugger chiming in. I have them in every backpack and suitcase now because it makes falling asleep anywhere a fairly consistent experience -- along with an eye mask to be complete. These are the best ones I've found so far:
Yes! These seem to last at least a few months each when left under a pillow (rather than stuffed into a backpack or something which degrades them faster).
https://smile.amazon.com/gp/product/B01M6AI2HF/ref=ppx_yo_dt...