Okay, it's not much, but I would still classify it as MIGHTY HANDY INSIGHT about the ditty bag.
For some reason--a reason which, as you know, I am wont to figure out--nobody has yet talked about making ditty bags out of old polyester AND nobody has discovered my excellent Topstitching Breakthrough.
So, first on the merits of making these out of polyester. All of the things I've been saying are still true:
1. It comes in the super excellent funky patterns.
2. It's dirt cheap at the thrift store.
3. The stuff can't be destroyed. (Okay, it can be melted, but otherwise not worn out.)
Even better, though, you can make these bags and--with just a little topstitching of a few major seams, they hold their shape without a bunch of interfacing and such.
This old school kleenex box is my favorite shape so far, and i'm loving it as a makeup bag.
You can get a sense of my Topstitching Breakthrough on this purse I just made myself too (same idea: bigger bag):
I say Go Ditty or Go Home.
* One final Sewing Editor's Note: these are just lovely to make LINED, but I suggest lining them by double-siding the main pieces, attaching the zipper and then gussetting, rather than trying to do some sort of fancy two-bag-reversible trick. Here's why: they get too poofy. And yes I know this because I tried it and they turned out, well, poofy. In a bad way. So learn from my mistake, Grasshoppers. I'm just saying.