I found an interesting pattern online for a dress you can make quickly:
I liked the sound of a dress you can make in 20 minutes, and decided to try making one myself. A friend, who has an overlocker, also wanted to try, so we bought some fabric, and had a sewing evening. I used a cotton jersey, which drapes well but is quite easy to work with. It took me 2 evenings to sew my dress. I discovered that my Bernina sewing machine has a nice overlock stitch, which finished off the neckline nicely once I'd practiced on some scraps of material.
I adjusted the arm holes a bit, as I thought they were too wide, and made my dress about knee length, which was the longest I could with the fabric I bought. Other possibilities are a maxi length, and a tunic length, and I've bought some more fabric already to try a different variation.
It was fun to make, and I've used the dress several times this summer.