There is more to filtering than the lame and tasteless on-lens filters that render anything either as a sunset or as a pastel colored ethereal horror. About anything somewhat transparent can be used as a filtering material and if you look around you certainly have something you can use. Here are a couple of experimental results I found interesting :

The first one was captured through a misty window, and you probably have already seen such images. The second one is much more innovative : it was taken accross an empty bottle of fine Bordeaux wine during a picnic. I must admit that the great wine surely contributed to the creative process…