Idea's required for new home tweaks

Ok so I admit it, I'm completely obsessed with trying to improve my hi-fi. The hi-fi consist of several metal boxes with Naim on the front. I've tried tightening all the screws, sticking blue tac here, there & every where. I've placed them on MDF, glass and currently hang them from nylon rope (looks better than it sounds doh!) I've chucked sand all over my X-overs (placed in another metal box to protect from RF. (it's purely coincidence my initials also happen to be RF). I've even reached the stage of carpeting my speakers! Have you ever tried hovering your speaker cabinets?
So has anyone got anymore ideas I could try the next time I have too much time on my hands?