Works on all of them except the ones stuck to your eyeballs. Corrosion-Be-Gone is a gel made to remove the schmutz from all types of battery terminals, circuit boards and contacts, on everything from cars to computer boards. Our each is a 0.3 oz jar.

Don't toss it and buy a universal remote. (How many things are really universal, after all?) Try this jar of Keypad Fix, designed to clean and restore conductivity to the carbon on the keys and the copper PC board pads that make up the rubber-coated switches on remotes, game controllers, and security keypads. Contains enough to coat over 200 button contacts.

This little amplified speaker looks like a mini classic guitar amp, in vintage brown and tan, with a silver grille on the front and “Mini Amp” written in a font you will recognize from your garage band days. Measures approx 4-1/2” wide x 4” high x 3” deep with a 3W speaker, on-off switch, red power light, audio input and (3) knobs for treble, bass and volume. Powered by the included USB cable or (3) “AA” batteries, which you supply. Comes with an auxiliary cable that you plug into your phone, MP3 player or tablet, since another thing you supply is the tunes. Works with PCs and Macs also . Paul from our USB Specialty Speaker department already bought one for himself, so we know it's nice.

Go digital without paying the cable guy. This refurbished digital amplified indoor antenna from RCA features a switchable inline amp with a 55dB boost and a pair of 38" 7-draw dipoles (think: ears of a very large rabbit). Slick looking. Measures 8-3/8" tall x 4-5/8" x 4-1/8" before extension. The only cable you’ll ever need is the 6-foot coax from the unit to the TV.

These 36-Ohm ear buds have 15-foot leads, so you could practically leave your pod/pad/phone in another room, with the standard 1/8" plug at the the end that isn't in your ears. We'll send (2) pair because we know you keep losing these things or ripping the wires off (although 15-foot leads may just take care of that little wire problem).

Build your own quartz antenna. These (2) 4-3/8" x 3" x 1-5/16" plastic boxes each have (2) boxes of quartz crystals inside and (2) aluminum U-brackets that are attached to a single screw terminal on one short side of the box. Back in the early 70's, they were originally made to be used in pairs as part of a 300 Ohm antenna. Not sure if they will work with today's TV's but all you need is cabling to connect them and give it a try. Made in Brazil, the antenna capital of South America, probably.

Get plugged in with this pair of jacks, one each: 1/8” (3.5mm) feminine jack to 1/4” plug; and 1/4” feminine jack to 1/8” (3.5m) plug. Both are TRS--tip/ring/sleeve--wired. You get (4) jacks in all, you lucky thing, you.

This little package of take-out parts is from a marine public address system, but you don't really have to be on the water to use it. You'll get a 15K-Ohm handset mic (1/4" out) with an 11-foot cord partially coiled, an in-line level control with a telephone plug input, a mount for the mic and a 20-foot DIN-telephone plug cord.

Look around and see if you have a giant universal remote control that smells like chocolate. No? Guess what. Ours is over 9" x 4-1/2" x 3/4" thick, which is hard to lose in the couch cushions, and it looks and smells like a big ol' chocolate candy bar. Can be programmed (via 3/4" square buttons) to control a TV, VCR, DVD player, DVR, cable box, satellite dish, audio equipment (from hundreds of manufacturers) and streetlights. (OK, we lied about the streetlights, but still.) You add (2) "AA" batteries while ignoring the "AAA" printed on the package.

Electronic stuff sticking out, is it? Cozy your HDTV, DVR, Blue-ray or whatever right up to the wall or cabinet with this 180-degree swiveling HDMI adapter. Maximum cable length is approx 30 feet.

Now you can share your music with your friends, Romans, countrymen, and even strangers on a train. Just plug your buds into the standard 1/8” headphone jacks and you’ll both be tuned in. Slides into a little black rubber case that has a 7/8” slip ring so you can hang it on whatever. Bonus: the bottom of the case is a touch stylus. We’ll pick one in red, black, green, blue, pink or purple.

Plug this cut-diamond-shaped, white plastic speaker into your audio player, and its internal amp and 3/4” speaker will go to work. Measures approx 2” across x 1-1/4” deep not counting the standard 1/8” mini-plug. Recharges via the included USB cord. (Charge for a couple hours before using, and adjust the volume, as it’s prone to clipping.) You pick red, white or black.

These little 1/2W waterproof amplified speakers measure 4-5/8" x 2" in an oblong plastic case with a 1-1/8” standard jack to connect to a smart phone or MP3 player. Drop your device in the waterproof bag, connect it to the speaker. Instant tunes in the shower or at the beach. On a 20” rope cord. We’ll pick one in white, gray, green or blue.

but violets are purple. And so are these 32-Ohm earbuds with a purple inline mic on a purple 40” lead with a standard 1/8” headphone purple plug. Include (3) assorted purple covers in a super handy dandy plastic case. Get a pair for grads of NYU (home of the Fighting Violets!) or for fans of Northwestern, LSU, TCU, KSU, WIU, ECU or Furman, plus any we forgot. Purple reigns.

We believe this is the most universal of our universal remotes to date, because universals are getting universaler all the time. This RCA unit will control up to (6) devices, including TVs, DVDs, VCRs, Blu-rays, cable boxes, satellites, audio players, stereos, streaming devices and most small dogs. Just kidding about that last one--you control small dogs with bacon. Remote works on devices from many manufacturers, and is easy to program. Measures 8” x 2-1/2” x 3/4”. You add a pair of “AAA” batteries.

The boombox may be dead, but Boom Bags live on to fight the onslaught of all those ear-bud-wearing newbies. Play it loud with this audio take-out from the makers of Boom Bags carry-on audio luggage and backpacks. Our each is a self-contained stereo amp with 5W per side via 3” speakers, plus a 4” 8W subwoofer, all with metal mesh covers. Has 1/8” output, audio input and mic input with separate level control. Remote has a 15-foot range, and adjusts the subwoofer volume. Also has (3) USB charge ports, and comes with a 5-foot cord with 1/8" TRS plugs and a 12VDC power supply with a 6-foot cord. Remote has a coin-cell battery. Power LED is a standby light. Measures 13-1/4" x 12-3/4" x 1-3/8" thick. Build your own bag or box, or just hang it on the wall.