It was a good day. I was in a crafts tent in the middle of the fields, with a great view down to Canary Wharf:
I started off using my embroidery hoop screens plus stencils - some made by me, and some from "Stencil 101" by Ed Roth and a Dover book of dinosaur stencils.
The children could choose a stencil, a selection of which I had taped to the back of the tent, and a colour of fabric paint, and they put a piece of newspaper inside a t-shirt and placed their stencil on the t-shirt where they wanted to print it. Then they used a plastic card to spread fabric paint over the embroidery hoop screen with the stencil underneath, and lifted up the hoop and stencil to reveal the print. Some children wanted to add hand-painted effects with a brush as well, which added a nice individual creative if messy element to the t-shirts.
Then, when it got busier, which it did particularly when it started to rain and everyone came into the various tents in the festival to shelter, I didn't have time to wash up the hoop screens and just gave out the stencils with brushes and fabric paint.
The children who participated made some great t-shirts and it was a fun day.