I quilted the fabric to make this and now I want to put something in the bottom for stability. Does anyone have any suggestions for what I could use?

How firm do you want the bottom? I've used thick plastic canvas before. Or you could even use a little batting a fabric wrapped balsa wood if you want it to be able to stand up by itself.

Hi and welcome to the board from Iowa.

I am in love with the main fabric of the bag! haven't made a bag, so can't advise you, though!

i have used sturdy cardboard when it wears out change it

I bought some plastic canvas and may try that. It doesn't seem very thick even though I bought the thickest that Joann's had. Maybe I could sandwich some stiff interfacing between two pieces and then cover with lining fabric. Thanks for the welcome. I am in Virginia.

cathyvv, the fabric came from Hobby Lobby, it is printed duck and I used the solid pink inside. I really like it also.

I buy Art Bin boxes at Joann's. They come with sheets of plastic for dividers, but I use them (cut to size) in the bottoms of purses and bags. Works great! I also use them to cut out templates if the need arises.

Welcome to the board!

My sister in law uses those clear plastic panels normally used to hang under a light in a drop ceiling. Her husband cuts them to size. Then she rounds the corners and puts them in a fabric sleeve.

Someone on the board here recommended worn-out cutting mats. Apparently they work great for bag-bottoms. BTW, LOVE your fabric choices!!