(MONEY Magazine) – Neat and convenient, all-in-one film-plus-camera boxes were introduced in 1987 by Kodak (Funsaver 35) and Fuji (QuickSnap). These single-use cameras (about $9) are cardboard boxes with shutters, fixed focus and 35mm color film -- 24 outdoor exposures. They work conventionally, except that you drop off the box with a developer and get back the prints; the camera goes to the manufacturer for recycling. This year, single-use sales are expected to triple from last year to 15 million. Fueling this popularity is the camera's increased sophistication: About $15 will buy you a plastic unit for underwater use, a built-in flash box for indoor pictures or a panoramic model for wide-screen memories. And there are coming attractions: Fuji is selling a telephoto single-use in Japan. How well do they work? Our test results (above) proved them simple to operate -- and great for kids. Shots from Kodak and Fuji flash models were quite good. The Kodak Stretch Panoramic, however, tended to lop off the heads of people we aimed at.