Impressive, this 3-foot Lizard King. The 1:14 scale plastic model of a Tyrannosaurus Rex skeleton has 51 bones that snap together, then snap apart easily for later use, which is more than you can say about the original. Measures 36" long, and comes with a display stand. Bones are nicely aged for paleontological verisimilitude. Very nice kit, with legs, as they say! For ages 8 and up.

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And teach a kid (8 and up) the basics of solar power. This excellent educational kit from Elenco comes with (9) 0.5VDC solar cells pre-wired in sets of (3) and mounted in a 5" x 4" x 7/16" black-plastic frame with screw terminals on the bottom. The kit includes a 1.5VDC motor with leads and a mount, a fan blade and (4) plastic discs from 5/8" dia to 2" dia for mounting on the motor shaft, a 1.5V incandescent bulb with leads, a sound module with leads, and graphic cards to mount on the discs. Comes with a 14-page instruction/experiment booklet, including info on increasing voltage and amperage, powering battery charges, radios, games, etc. Lots of science project potential. "Heuristic as all get-out," Jarvis said when he saw it. Ages 8+.

Everything you need to build a little DC motor is included in this kit (except sandpaper, screwdriver, scissors and, of course, an AA battery). The instructions are simple and explain the theory as well as assembly. Fun and educational for ages 12 and up.

From Fascinations®, these small model kits are made from intricately laser-cut polished steel. Punch the pieces out from the 4-1/4" square sheet and put them together with the tiny tabs. You pick the dragonfly, with a 4-1/2" wingspan or the Black Pearl pirate ship, approx 3-1/2" long. For ages 14+, because they take plenty of small motor skills.

Real-life pets require too much dedication for a kid on the go. Here’s an alternative. These kits let kids to hatch and grow a creature in a small clear tank (included) in as little as two days using the provided eggs, food and water purifier. Also come with a magnifying glass. You pick: the Dragon kit, with rocks for decoration; or the Micro Aqua-Saurs kit, with sand. Kids won’t have to walk these hatchlings, but regular feedings are required. Ages 6+

Jarvis Says: Full disclosure, these are the very same entertaining brine shrimp as the well-know Ocean Apes. 

This is your classic dual-threaded connector tube to link a pair of plastic bottles together, demonstrate tornado action and learn once and for all about the fluid dynamics concept of a vortex. In an homage to Dorothy in Kansas, this connector tube also comes with a tiny cow and a barn included. Also a lot of glitter, which we suppose is Oz-like. Includes instructions and a surplus-inducing QR code (to see a video) that's as dead as the Wicked Witch of the West.

Could be a new line of cologne, but in fact, it’s a clever kinetic action demo kit called Wave Wires® with magnets marked for polarity, and mounted on (4) 8-1/2” long wires attached to a 4-1/4” square steel base. Includes a dozen 1/2” dia steel disc weights, an acrylic ring and an 8-page activity booklet. The attraction/repulsion magnetic properties cause the magnets to swing on top of the wires like old-time circus acrobats. Ages 8-14. Really cool, if we don’t say so ourselves.

Rockers with an electronics bent will love this kit. You construct a 4-string tenor guitar, complete with on-board amp. Measures 20" long when finished. You assemble the neck and body, wind the pickup and wire the amp. Includes a 15-page manual with assembly instructions, playing tips and chords. The tuning is DGBE, known as guitar tuning, Chicago tuning or baritone smokeless tuning, but others are possible. Think jazz, dixieland, jug band and bunch of other funky fun. You add a couple "AA" batteries. From Jr. Scientist™ for ages 8+.

You can’t start fooling people too early. This box of tricks is for budding magicians, and includes the props and instructions for (77) tricks. Includes a magic wand, without which you can’t be a magician, plus assorted cups, balls, cards and coin-trick frames. You add a few things like money, a handkerchief, gullible friends, etc. For ages 6+.

Learn how they did it in Hawaii Five-0 (look it up or ask your parents) every time Danno booked ’em. No crime required for this Fingerprint Verification Set. Comes with a 2" dia magnifier, ink pad, fingerprint powder, dusting brush, blower, goggles, tape, (5) 3-1/2" x 5-1/2" fingerprint cards, fake credentials, (5) 3” x 5”evidence cards and a (7)-page booklet. Ages 10+.