Using this token silo add - on is easy. First, decide which items you want to store. You can put your mini - American size cards in the small trays and standard size cards in the large tray. You can also use it to store tokens, dials, and dice. When it comes to customization, feel free to mix and match the trays as you like to fit your specific needs. As for maintenance, keep it in a dry place to prevent damage. If it gets dirty, you can gently wipe it with a soft cloth. Just avoid using harsh chemicals as they may damage the product.