sheetsda writes: "For many years now PC cases have included 3 or 4 or even more external 5.25 inch drive bays. These days with the proliferation of USB thumb drives and gigabit Ethernet, even my DVD drive has been gathering dust since OS-install-time. Before that when combination CD-RW and DVD drives were nonexistent or expensive that still leaves and extra drive bay or two. What exceptionally inventive, useful, or clever uses have the community found for this extra space? Bonus geek cred for solutions making use of the power rails inside the case."