Outside the box
Now that you are starting to work on Criteria C, you may realize that some of the initial ideas you had are not so possible to make and you will need to readjust them. Maybe you can have some fun with this and try some new things using elements you have around. Please have a look at some of this videos for inspiration.
1/ What happens if you combine Legos and stop motion?
2/ Shadow puppets
3/ Flipbooks allow for many possibilities. Here a couple of examples. There is a whole post about flipbooks, here.
4/ What if you record your own hands doing things with your elements?
5/ Or what about intro credits or type presentations?