I don't do anything extra special or fancy - I put all of the cards in order, Major arcana on top & the remaining by suit and then by number. Serves a few purposes. 1. All the cards are present and in the condition I expected. 2. Now they're all upright. 3. I've looked at each image personally before reading with the cards. 4. If they did feel "off" before, they don't anymore.
No lunar/solar exposure, herbs, stones/crystals, incense etc. I do take a bit of time and select the color or type of bag I want them in though and if they didn't come in a box, once they're in the bag I place them in a 3x5 plastic index holder case