Earplugs - I have got used to them but for sleeping in they can become wearisome. I wear them for ceilidhs and with all the adrenaline flowing it is not an issue then. The best I found are those bright yellow jobbies that racing drivers wear - they squash down to nothing , feel like putty but fill the ear slowly but well. They cutout more than any other types I have tried and Joy wears them overnight (farmer's daughter) and at ceilidhs and they are the only ones she can get to stay in. A UK brand name (maybe worldwide) is Earfit and come in a round snuff-box size plastic container. I will be wearing mine at Warwick FF and I don't even go inside the marquee - shouts for itself really dunnit?