Here are some ideas on how to make use of a green screen (or in this case a green or blue poster board) to put your stop motion and clay animation characters into sets and locations that just don't quite fit onto your animation stage.
This is NOT a software demo. I use After Effects, but I know many animators can afford that, and with so many options, I didn't attempt to get into all the steps for compositing green screen shots. So if it seems like I skim over the post production stage, that's why.
Vamirina Disneyland clip: IMToys at https://www.youtube.com/channel/UCN0w...
Please see my other tutorials on how to animate toys, make an armature for a puppet, as well as other stop motion subjects.
Software: Dragonframe. iStopmotion (Mac only) is a good frame-capturing app for the price. I understand MonkeyJam is a good free option for Windows (well, some users feel otherwise). If you have a favorite stop motion app, please tell us about it in the comments.
Effects compositing in After Effects and editing in Adobe Premiere Pro. I have not had the opportunity to try out free or inexpensive alternatives for Windows.
Camera: I'm using a DSLR. But if you're not there yet, a good option is a phone or tablet with a quality camera and an app that can shoot single frame for 24-frames-per-second playback.
Shopping:
Green or blue poster board: Arts/craft store, Target, or $1 Store
Clay (Van Aken, Sculpy III), armature wire: Arts/craft store like Hobby Lobby or amazon.com.
Armature kit: stopmotionstore.com
16-gauge aluminum armature wire (from an art store or Amazon, not the hardware store)
Just about everything here can be found on Amazon if you don't have all these kinds of stores in your area. You can also get animation supplies from stopmotionstore.com.