Fusing Plastic Bags: The Bags!
You can use ANY kind of bags when you are fusing... but the thin grocery bags are the most abundant and they are the best to learn on since they are an average thickness. Once you have mastered the fusing, move on to thicker plastics.
Tip for the Fusing Pros:
Achieving different colors is easy when you layer things. Try putting a bold color behind another colorful transparent bag to see what happens! One time I layered a light pink see-through plastic ontop of a black bag and I got this really neat splotchy purple!