The Shape of Cool™ is trademarked. Really. And its owner is Lava® brand lamps. Accept no substitutes, we always say. Usually. Sometimes. Certainly in this case. This Lava® Lamp is 14-1/2" tall with a silvery aluminum stand and tip. It may have clear liquid with red lava; purple liquid with pink lava; or blue liquid with either yellow or purple lava. All classic Lava® colors, so we know you’ll like the one we pick out for you! All include a 25W bulb in the base. UL.

A failed folk-rock group from the Summer of Love? No, a trio of pretty lepidoptera oscillating through many colors via the magic of fiber optics. They have a 3" wingspread and sit on a 1-1/2" dia base that holds the (3) included and replaceable button-cell batteries inside. You'll get (3), at least (2) different, along with self-adhesive tape to stick them somewhere. We like them as party lights, but they'd also be great on a hat.

Mighty bright for its size, this 8-1/4” x 13/16” dia (with a 1-1/16” dia lens) flashlight has a Super Bright LED bulb. Our VP for Illumination called it “scary bright.” Rated for 100-120 lumens, it even has a flashing mode for emergencies. Black aluminum body and a belt-mount carrying sleeve. Recommended by the manufacturer for hunters, security and law enforcement personnel, etc. Uses just (2) “AA” batteries but you still have to provide them.

Who doesn’t love laser pointers? Their precision. Their ethereal, mind-blowing, otherwordly glow. Their magic, now-you-see-it-now-you-don’t quality. Ours come in several colors, including red, green, violet and combinations of those. You want a single point? We’ve got ’em. You want a kaleidoscope display? We’ve got those, too. They're all 5" to 6" long, give or take, and batteries are included. All you have to do is point and click.

Ten electrical leads with an alligator clip on each end. Each lead is about 20" long, not counting the 'gators. Vinyl coated 20-22 ga. wire with a vinyl cover over each clip. They come in an assortment of five colors with two leads in each color. The manufacturer calls them heavy duty but we would restrict them to the light currents and low voltages you will be using in your home experiments. Our each is a set of (10).

You move too fast. You got to make the mornin' last, sport, or you've got no chance at all of feelin' groovy. The Groovy Lamp is LavaLampish, but with clearer fluid that's not quite so goopy, but considerably more, well, groovy. Stands 13-1/4" tall on a 3-3/8" base and draws 25W. Has an in-line switch and 6-foot cord, and we'll pick a blue, green, purple or orange one for you. UL.

Our each is a pack of (10) common cathode 5mm dia red/green/blue LEDs. Clear lens, 20mA rated for 100K hour life. 3V supply will work for all. You also get 100 Ohm and 510 Ohm resistors to step down 5 and 12VDC respectively. Luminous intensity is 4,000 mcd.

Just plug this set of 2-contact flat molded connectors into each other. (Each one has both a male and a female port.) Yes, they're on opposite ends of 10" long red and black, 18-2 AWG leads, but that's just a device to keep them together. When you're ready to hook them up, just clip those leads and get each end wired. You'll get a pack of (2) complete sets, perfect for hobbyists, tinkerers, and electronic DIYers.

This 4-3/4" dia moon is so much more interesting than the real thing. This one has a 4-way dimmer, flash/strobe/fast and slow fade/steady-on modes, plus internal LEDs to make (15) colors in addition to traditional moonish white. It's also a great nightlight. Remote control comes with a battery but you'll need (3) "AAA" batteries to run the moon. Topographical, but the giant astronaut footprint suggests it's not quite to scale. Will sit up by itself or wall mount on a couple of finishing nails.

Neatness definitely counts. Even in wiring. Especially in wiring. End those electrical mare's nests with this 6-position barrier strip, rated for up to 30A at 600V. Comes with a clear plastic cover with access to the screw terminals and measures 3-5/8" x 1-1/4" x 5/8" with a 5/16" mounting hole at each end. Terminals are in pairs.

Our laser combo pack scores you two pen-shaped 5mW laser pointers, (1) each in stopping red and going green. These colors are also perfect for Christmas, St. Patrick's Day and St. Valentine's Day. Oh, and nautical situations. The housing is flat black or silver with a gold pocket clip and head. The 532nm Class IIIa green light is 5-5/8" long x 1/2" dia, with a momentary-on switch. It's brighter than the red so it's perfect for all daytime pointer needs. The red is 5-1/4" long, and its mellow red light makes it more suitable for board room presentations but we've thrown ours two blocks at night, no problem. Green or red, whatever you do, don't cross the streams. Each pointer takes (2) "AAA" batteries, which are included.

Don't wait or it'll all be gone. You get (4) pieces, 11 feet each, of 18-2 wire, polarized, black with a white stripe and eminently discardable spade-push terminals on both ends. (That's under a nickel a foot, cowboy.) Lamp cord, speaker wire, pretty much anything you run juice to.

These itsy 120V neon lamps have negligible current draw and green sleeves over the lenses. Leads are 4-1/2" long with an inline limiting resistor on one. Made in the USA.

You decide. This panel-mount indicator light has a 5mm red LED in a 5/16” dia x 3/4” deep mount with 47” leads and a 2-pin 5.5mm Molex connector on the other end. Includes wings on the mount to hold it in place. You'll need 20mA at 3VDC for power.

These LEDs are wired with an in-line diode on one leg so you can run them with either AC or DC. 24 volts works best (do not run them on 120V!) drawing 4mA. You'll get leads between 4" and 9" with quick-disconnect terminals. You pick yellow or red.

This little light of ours has three functions and still fits in your pocket. Just 5” long in a black aluminum housing, it has a red laser, a 5-LED UV light and a bright white 10-LED standard flashlight. You add a trio of “AAA” batteries, thoughtfully linked here, and Bob’s your uncle, or at least your brother-in-law.

This tiny 3 mm LED sits in a 5/32" x 1/4" x 7/32" black-plastic box with PC board mounts. At 2-3 volts it glows green and draws 40 mA.

This 12V 35W Racing Series halogen lamp is made for automobile use and comes with a matching gasket and a 1/2" deep lens with a slight amber tint. (You'll need to epoxy the lens on if you're not mounting the lamp in another bracket.) Bulb is 2-1/2" wide x 1-11/16" tall x 1-1/2" deep with a 2-pin connector. Pins are 1/4" apart on the outside.