The lovely Livebird asked in the comments if I would post more details of the 'artfully tied garbage bag' pattern I bought at the fifties fair. There are only two pattern pieces, and one small page of instructions. I might make this out of some cheapo fabric, because it looks like one of those frocks which could be amazing...but is just as likely to turn out unwearable. (I recommend clicking on the pattern cover picture to look at the illustration of the woman's face. Hilarious.)
If you try it Livebird, let me know!