Traditional Scottish Lobster creels were made from wood and nylon fishing net and mounted on a wooden base. These materials were readily available and cheap. The downside is that they have a relatively short life and tend to float.
One of the features of a creel is that it is highly selective. This means that by and large we catch only what we are trying to catch. Uniquely, in the case that we do catch something we don't want then creels keep the animals alive and we can let them go again. Done right creel fishing has a very low environmental impact with no by-catch.