Has there been any inexpensive item that enhanced your system's sound?


For me it was an inexpensive power cord that was laying around for years, a Pangea AC9.  I have it connected to my Yamaha A S2000.  I've tried the stock cord on the Yamaha and then some of my other cords, (Wireworld, VH Flavor 4, Acronlink/Oyaide custom cord and a MAC). I've had lots of amps and integrated amps over the years, and this is the first time the Pangea contributed to making better sound. It surprised me because I had tossed it aside and forgot about it.  Power cord performance is such a crap-shoot and dependent on so many other variables in the audio chain.  Any inexpensive item you've come across that enhanced your system's sound? 
foster_9
bdp24...I trust you had some not so kind words for that clerk...or, shall we be kind and say 'cluck'?

When I read that, if in your shoes, that gov't. drone would still be picking his/her/it's mental shards off the wall behind him/her/it.  Whatta rude SOB!

My knee-jerk reaction would have been (after taking a deep breath)...

"Not so elderly as to recognize a mental midget when I meet one."

Comments like that deserve all the 'tactful vitriol' you can pack into English without resorting to 4 letter expletives.  I'm still in admiration of the wordsmiths of the past, who could verbally drag an idiot through a mental keyhole and back again without resorting to merely crude epithets or single finger gestures as is too typical these days...

But, I digress...*sigh*  It happens a lot of late... ;)

If I was where you is, I'd go get some script and enjoy.  Tell the MD you're allergic to civilization....that's my malady. *G*

Last time I was in CA, I read a reporter's story of acquiring the appropo credentials...his prepared story of symptoms, blah blah, etc.  The doc blinked and said:

"I'm a gynecologist.  Here's your prescription."

You can thank me @ your convenience. *S* ;)
I replaced an ikea shelf that now holds the records with a more audiophiley one I found on CL. Didn't even think it would make a difference but it did. Really helped with a more airy soundstage. 
Well I will say, room acoustics. You'll be surprised to realize how good the improvement without changing any gears. Of course, the position of speakers plays a big part as well. :)
     The cheapest improvement to my sound is two cones of foam, mounted to the center of my two sub grill covers. They cost a negative $250, assuming I sell my Thiel, custom built Madisound, and another custom designed sub crossover I still have.
That, and time aligning the subs with the mains.
Actually Jerry, she was asking because of the age-related regulations regarding drivers licenses. It was the shock of being called elderly, and the realization that I apparently am, I guess! I still think of my self as a 39 year old, ya know?