Have you seen this website? Montessori for Everyone has free materials to download and print to use with your kiddos. Look at the right hand column on the home page. You'll find them there.
We have the sensory room in our house set up with a shelf full of activities, Montessori style, for Will and the other kids to use. We do a very loose interpretation of Montessori teaching, but it is typically guided by what he wants to do. All of that might change soon...we're looking into some ABA therapy to see if it would benefit him. Can't say those two mix well together.
Regardless, the materials she has on her website are beautiful and can be used with a variety of kids.