I also think the disposable missalettes are terrible.I have found the most effective way to get rid of them is a letter to the parish council lamenting the destruction of natural resources,in order to provide the paper,for the ever forthcoming new missals. If you are not known as an orthodox Catholic,they usually think you are a PC tree hugger and may get scared into doing the right thing for the wrong reason. But as long as you present objectively and don't lie,I can't see the harm.