Construction: The rack and jars could be built of plastic, glass, stainless steel, or any number of other materials. Glass jars are transparent, strong, portable, and break-resistant.
Lid: The jars may feature airtight lids that shield the spices from moisture, light, and air while maintaining their freshness. For simple dispensing, the lids can have a screw-on or a snap-on design and might include a shaker or a spoon.
Rack: The rack, which can be easily stored on a countertop or in a cabinet, may be constructed from the same material as the jars. It may also be small and space-saving in design. For simple access to the spices, the rack's base may rotate or not.