Her main thing she had me put together were these money cubes:
This is so visual for the kiddos!
1 cube= a penny
5 cubes = a nickel
10 cubes= a dime
25 cubes= a quarter.
I taped real coins onto the cubes. And she was specific that I make the whole set one color, another visual thing for the kiddos.
Another teacher happened to be in the classroom to ask me a question and wrote down this idea because she thought it was so good!
This is a quick post, but hopefully it gave you some ideas!