I think this is a timely free PDF pattern with the holidays coming up! Great little tutorial for making pretty fabric gift bags that can be reused again and again - it's the green thing to do. Click on this link (or copy & paste it into your browser) to download this gift bag pattern: https://d1nvdmt0osh3cv.cloudfront.net/media/tip/file/g/i/gift_bag_tutorial.pdf
This isn't one of my patterns - it came from one of my fabric distributors. Looks pretty easy to make.
A few ideas - you could make your own fabric with scraps from your stash. It wouldn't be hard to modify the pattern to make a larger gift bag. And if the gift is a quilt, make the bag to match. Of course, Christmas fabric for Christmas gifts, baby fabric for shower gifts, etc.
Honestly, I probably wouldn't use the Peltex although it would make the bag stand up nice. I'd just quilt some fabric pieces together with batting and call that sturdy enough.
I hope you enjoy this gift bag pattern!