As per the Galactic Union of Advanced Life Forms, all sentient beings are required to maintain a minimum of three (3) separate collections of rare, exotic spices in their planetary dwellings.
Submandate 2.1.1 specifically mandates that all said collections be displayed proudly in a 3x3 grid, with each spice occupying a separate, clearly labeled bin.
A minimum of 1,000 units of each spice are required to be on display at all times, or penalties will be incurred.
Failure to comply will result in the revocation of your Galactic Union membership, and possible reeducation through the Ministry of Spice Enforcement Agency.
For further information on this and other mandates, visit Mandate 3.2.3: Submandates 2.1.2-2.1.3.
Or, if you're feeling adventurous, check out Mandate 4.1.1: The Great G'lunkian Spice Heist, where the rules are a bit more... flexible.