Best DIY tweak?


What is the best inexpensive tweak, you've discovered?
rdylan
I would change the question to:
The best free, or nearly free tweaks.
(nearly free is a few bucks... never more then a Ten$)
#1) Shining all silver spinning discs. (CD and DVD): I now use Meguiars "ScratchX" to clean, smooth and polish all my discs.(under $10 a tube, lasts nealy forever) (I use Viva paper towels, and they 'usually' work well, once in awhile the paper towel will scratch a bit, then I send that roll to the kitchen... and get another one...)
#2) computer chip antistatic foam (from like Radio Shack) around the IC's in a DAC. (this tweek was reported YEARS and YEARS ago in Stereophile from the ?Danish correspondent.. I like it.) again under $10.
#3) Rubber chemical bottle stoppers everywhere... $1 each.. I have dozens of size 10 around, on, and under...
#4)Caig Deoxit cleaning on all the connectors and A/C plugs
#5) Teakwood blocks from a Goodwill find Kitchen cutting board, or a cheese cutting board.. $2 or so, but you have to find a REAL teakwood board, many branded as such are not. has to be heavy 'greasy' feeling wood. (not that it has kitchen grease on it!) I have many 2" cubes..
#6) speaker cable risers, cardboard tubes cut into 2" tall, with a "V" to hold the cables. Free. If toilet paper tubes turn you off, use the paper towel tubes..
(1) Clean all your connections with the best contact cleaner/enhancer on the market!.....Crystal Clear contact cleaner/enhancer $$$25 from www.thecablepro.com (2) Put a little Teflon Tape from Wal-Mart on all your AC plug's prongs! ( Take about 3 inches of teflon tape and wrape it around each ac plug prong and then push them all the way up the prongs )
Put a little Teflon Tape from Wal-Mart on all your AC plug's prongs! ( Take about 3 inches of teflon tape and wrape it around each ac plug prong and then push them all the way up the prongs

What does putting plumbers tape on the AC prongs do other than potentially hinder current flow??
What does putting teflon tape on the ac prongs do? It cleans up that very dirty ac power a little.....I also put teflon tape on all my inside wiring in all my gear...my TV too.