One of the first things I learned as a cake decorator was making parchment decorating bags. We didn’t have the disposable bags at the time, so it was either the parchment bags or cleaning the pastry bags (uuuughhh!)
Once you learn how to make them, you may only use these. They are not only easy but inexpensive to make!
Free Cake Mix Magic Recipe Book
Jill's 20 BEST Cake Mix Magic Recipes & Decorating Ideas