Any foam sheet tutorials available?

Earlier this week, I was mesmerized by a new product at Tamu JajaKraf - the colourful foam sheet. As per my readings, it is the materials she used for the alphabets that she puts on her lovely headband. Besides, I also bought a few stuff. You may refer to my picture above.

Hurmm.. instead of turn them into those alphabets, what else can I do with it? Come on Tina, be creative! I also request from your help - any tutorials would be very good for me.

Thank you :-)