The first thing I've ran out of is Pledge. Since I rarely dust it's probably the first can I ever bought. Just kidding, I don't dust that infrequently. So I went online and found a recipe for "Natural Dusting Furniture Polish" for a website called the Kitchen Herbalist.
1/2 Cup filtered water (I used regular tap water)
1/4 Cup white distilled vinegar (already had a big bottle!)
3-4 Tbs. almond or light olive oil (I went with the olive oil so I could use it for other things)
40-60 drops lemon essential oil (bought at the health food store down the street)
20-30 drops cedar essential oil (also from health food store)
20-30 drops sweet orange essential oil (the health food store didn't have this but I think it's just for smell)
Mix all the ingredients in a spray bottle, shake well, use like Pledge.