Thank you for the suggestions, but this isn't quite what I am looking for. Moving the NAS to another room isn't an option, bedroom and bathroom are even less suitable for a NAS :D
I don't wish to modify the appearance of it either. For one, I've spent quite a lot of time designing and building the enclosure from scratch (it's a unique and original design from my creation). Then, it sits in my TV cabinet and space is an additional concern.