Square Cupcake Liner Template Cupcake/mini Cake Square Decorative Liners?

Cupcake/mini cake square decorative liners? - square cupcake liner template

I am helping plan a party and I am looking for small decorative bags that could be a square biscuits or cake, or mini-brownies are made palatable for the operation. I wanted to do something more normal cupcake liners. All ideas, where I this or I could use to buy to do this? Thank you.