Binchester 2014 T-shirt competition

We're looking forward to starting our new season of excavation at Binchester in June. However, like any self-respecting research project we need a t-shirt. So, I am looking for designs for this year's sartorial garment of choice. Deadline June 1st. Send in your design and the winner will get a small prize and the honour of seeing their design captured for posterity on 100% manmade fibres!