The other extreme is to just use shooting range ear protection: http://www.earplugstore.com/hunting-and-shooting-ear-plugs.h... (or amazon'd: http://www.amazon.com/Best-Sellers-Sports-Outdoors-Hunting-E...)
http://www.wisegeek.com/what-are-safety-ear-plugs.htm
The other extreme is to just use shooting range ear protection: http://www.earplugstore.com/hunting-and-shooting-ear-plugs.h... (or amazon'd: http://www.amazon.com/Best-Sellers-Sports-Outdoors-Hunting-E...)