When you have lots of informative or marketing materials that you wish to give the client then you can make document folders for them. This is a very popular choice for conferences and fairs. They often come with special incisions where you can attach your business card in a visible way. When there are more materials, we can make it with a spine which allows for more printed materials (and why not also a USB stick, pen or other treats).
An alternative is to use a fastener folder where punched pages can be attached with metal clamps. Unlike document folders, materials can also be read by turning the pages this way.
When there are really a lot of materials and it’s also important to preserve them in an aesthetic manner and/or for a longer period of time then we suggest making ring binders. Their strong paperboard covers and metal ring mechanisms make it easy to add punched materials. In addition, it’s good to leave your important information (such as a price list) in the client’s office for constant use.