What makes a person collect things? One young man has 30 frogs—some stuffed and some made of glass. Why? He once saw a stuffed frog he liked and decided to collect frogs. Collecting may also grow out of another interest. A person interested in history may save maps. One woman was given a set of Japanese combs. Now she has over 400 combs! There are many other reasons for collecting. One man who has over 300 different kinds of wire gave the simplest reason of all: 'I save wire because I like to save wire'. Maybe that's reason enough! Tracking down things for a collection is like going on a treasure hunt. You can find things in basements, attics, garages, yards, beaches, secondhand stores, bookstores—almost anywhere. A collection is what you make of it. Traditionally, people have saved stamps, coins, toy soldiers, dolls, newspapers and records. But today, people are going into new fields. They save odd things, such as tomato can labels, cigar bands, candy wrappers, buttons and comic books. The best collection isn't always the largest one. Sometimes a small collection is better than a large one of mediocre specimens(标本). But it is a good idea to remember this advice: 'Always collect any specimen you find. You may never get another one like it'. A young man collected 30 ______.