This is so simple to do, I'm not sure why anyone would use the chemical-laden, hormone disrupting, cancer-causing commercial air fresheners.
All this one involves is using a 3 oz. travel spray bottle, filling it about 3/4 full of water and adding about 15 drops of orange essential oil and about 2 drops of lavender essential oil. Shake before use.
You can also spritz this particular formula on your hair for a little extra shine or for a nice perfume. You know how smells always last longer in your hair? You can take advantage of that fact here.
Orange oil is especially good for oder removal and is even recommended for improving the Feng Shui of a room. If you made one of only lavender or lavender, ylang ylang and maybe some geranium oil, it would be for a great for spraying in your bedroom before bed for a nice, restful sleep.
There are plenty of aromatherapy formulas out there, so you're sure to find one you love. A couple awesome things about essential oils: most are naturally anti-bacterial and if you whatever you don't mix with a carrier oil/other essential oil or water lasts forever. The 3 oz. bottle is nice because you will probably use it up before it goes bad. If it smells rancid, don't use. (That makes sense, right? ;)
Just be sure the oils you use are actually essential oils and not "fragrance oils" or you risk just making a nasty chemical version. There are some oils that shouldn't be used for certain conditions, so be sure to research that. The ones I've listed are pretty safe and can even be used during pregnancy. (Except don't use lavender directly on little boys. There's a possibility it affects their hormones.)
iHerb.com sells plenty of essential oils and their service is great! If you use this code: ZEV497 then you get $10 off your first order of $40 or more or $5 off your order of less than $40. If your order is over $60, you get free 1-3 day shipping and they always fill orders fast! I do get credits if you use this code, but I really am very happy with their service and it sure beats using up gas and time driving around to find all the natural products I need. They even have non-perishable food.