The regular sized tracts fit well in this brochure holder sold on Amazon as "Dazzling Displays Clear Acrylic 4-Tier Brochure Holder for 6"W x 9"H - Half-Page Material":

The Large format tracts fit in this brochure holder sold on Amazon as "Dazzling Displays Clear Acrylic 3-Tier Brochure Holder for 8.5"w or 4"w Literature ":

Tract Storage

Plastic latch boxes such as the one pictured below can be found at stores like Walmart. They are good for keeping your tracts clean and dry when moving them from place to place or storing them in your vehicle.