John, I have a set of speakers from Radio Shack (I believe model 40-1441) that were about $20. They are a clam shell type, but do not separate but unfold to about 9 inches. Folded shut, they are about the size of a 10-ounce coffee cup. They have an on/off switch and volume thumb wheel. They have about an 8-inch cord with a 3.5 plug. They actually sound very good and are certainly loud enough for most listening, unlike some of them I have purchased that did not run off batteries. These take three AA batteries and can run off an AC adapter that is not included. Eric SS