Without any kind of grocery store or other source of nutrition, Sam has to be pretty handy with his traps, and he uses pretty much all of the most basic/popular kinds of traps. The most commonly used design is a snare. There are a couple different ways to tie snares, but each involves a rope or line of some kind tightening around the animal as it tries to move away. "Figure 4" traps are one of the least well-known that Sam uses, perhaps in part because their triggering mechanism (which is also where the trap gets its name) takes some design knowledge and can be a little tricky to set up correctly. He also uses box traps and deadfalls, which are basically the same as far as the triggering mechanism is concerned (both are commonly used because they are so simple), the only difference being that the box trap is intended to trap the animal alive and the deadfall is designed to kill the animal. He also mentions pit traps, which might work for Sam but are somewhat impractical because digging a pit that is anywhere near deep enough to trap most animals is very labor-intensive.