Carpet Freshener (I merely reduced the amounts given in tipnut's recipe, because my house is tiny and I only have a few area rugs over hardwood):
2 cups baking soda
1 cups dried lavender buds/flowers*
1/3 cup cornstarch
Directions:
Mix well and store in an airtight plastic container. Set aside for a couple days before using. Sprinkle generously on carpet and let sit for one hour before vacuuming.
*Instead of using dried herbs, you can substitute essential oils, experiment with amounts for best results. Make sure to mix it in the recipe thoroughly and let sit for a few days before using.
When restocking the baking soda, in addition to the gianormous box I also picked up an Arm & Hammer Soda Shaker which is brilliant for dispensing this stuff!
The other recipe came about from bits and pieces from a whole lot of recipes all over the 'net and went with:
Air/Linen Freshener Spray:
1 cup distilled water
1/2 cup ridiculously cheap vodka or witch hazel (I've discovered I prefer the latter, as it lacks that bottom note of "panhandler")
15 drops eucalyptus essential oil
15 drops lavender essential oil
15 drops grapefruit essential oil
Combine all ingredients in a spray bottle. Allow to sit a few hours before using. Shake bottle well to mix contents prior to each use.