Pattern paper (for designing your own patterns)
Do fabric stores sell a type of paper for creating your own patterns? I saw a small package of something like it at JoAnns but the pieces were small so I didn't think that was what I'm looking for. I think I recall seeing pattern paper back when I used to sew clothes and was in fabric stores all the time (many moons ago!). Is there such a thing, and what do they call it so I can ask for it by name?
If not, what do you use to create your own pattern? For starters, I'd like to create just a square for a pillow top.