The first combined Mercado de Pulgas / Tianguis Ecologica took place on the weekend in Cafe Voltaire. It featured cheeses, used books, used clothes, handmade jewelry, miscellany and lots more. Although one of my personal goals was selling books I wouldn't reread, I now have four thinner books to read.
According to Julie Foly who organized the event, the next one will probably take place in a larger venue. This time she had to turn some hopeful vendors away.