I'm trying to fill a giant (it didn't seem giant when I bought it, but after 2 weeks of making stars...) cookie jar full of them. I bought rainbow colored copy paper, and I'm cutting it into strips as I go. I started with tiny strips, like 1/4 inch, but the longer I go, the wider they're becoming.
I've found that you can't go much bigger than 1/2 inch, though, or they just don't bend in. (If that makes any sense.)
What did you use to make the creases that puff them up? I started with my fingernail, but when my nail started to ache, I switched to a seam ripper. It works pretty well, but I was wondering if there was something better.