I am in the camp of SLPs who believe that homework is very important for practice and carryover into other environments (generalization).
We all have students who have their sound down pat when the "see our face," then walk into the classroom door and it all goes out the window! Because of that, I'm working on a variety of generalization strategies for the classroom (like classroom walk-throughs when possible, visuals on the desk, a special 'remember my speech' pencil top eraser, secret signals between the classroom teacher and the student) and for home (homework...that's really the only way I get "into" the home!).
I use some homework that I find from SpeakingofSpeech.com. Check out their Materials Exchange HERE if you haven't before! Materials are made by SLPs for SLPs and downloads are free .pdf files.
First Free Homework Download!
Ice Cream Articulation Homework
Packet includes the following sounds: L, S/Z, SH, CH, TH, S-blends, L-blends, vocalic R, CVC words, and a bank page you can individualize. I used Word clipart.
My Summer Homework looked like this. This could also be adapted to be done for a month (e.g., November Language BINGO!). Made one for older elementary, and one for younger elementary/preschool.