This one is organised by Lantronix to promote their XPort Pro, world’s smallest Linux computer (according to Lantronix).
The contest is open to all individuals with interest in network technology, including businesses, university faculty, students, research labs, engineers and design contractors. There is no limit to the number of entries per person or organisation. Prizes of $6,000 and $3,000 will be awarded to the two top entries for Best Linux Design, and a separate prize of $3,000 for the Best Student Linux Design.
To enter you have to buy an XPort Pro evaluation kit for $99. This is bearable, but will probably limit the number of participants.