There are now over 100 designs in the running for the Edo Label t-shirt design contest. The designs are quite varied with most of the submissions coming from Japan. There have been quite a few non-Japanese entries too though and there is plenty of time for you to submit yours too. There are 20 days left so if you are planning on submitting you had better get around to creating your design soon.
There are two prizes of 50,000 yen which works out at around US$500 and submissions close midnight September 30th, Tokyo time.