Start by decorating your spice jar, if desired. You can use any material you'd like. I went with washi tape, but you could use anything from fabric to buttons to ribbon
Choose whether you want to make your air freshener with baking soda and essential oils or fresh coffee ground.
IF USING BAKING SODA AND ESSENTIAL OILS: Add baking soda to your spice jar and then dump it into a glass mixing bowl. This assures the proper amount of baking soda. Add 5-15 drops of essential oil depending on the amount of baking soda and the desired strength of scent. Stir and add to your spice jar using a silicone funnel.
IF USING FRESH COFFEE GROUNDS: Fill your spice jar with fresh coffee grounds using a silicone funnel
Replace the spice lid that has holes in it. Leave it open to freshen your space. For longer shelf-life, replace the solid lid when not in use.