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This heavy-duty rock tumbler does much more than ordinary rock polishers- it actually changes rough stones into beautiful high-luster semi precious gemstones (note: takes approximately 30 days to achieve). You can even make jewelry and key chains with the settings included in this set. This U.L. Listed set includes a tumbling machine with heavy-duty motor, rough semi-precious stones (including amethyst, jasper, agate and others), grit, polish, jewelry settings, glue and instruction manual. Ages 10 and up.

You know what they say about all work and no play! Liven up your daily writing with this fun Play-Doh pen. The Play-Doh container with modeling clay pops out of the pen and can be used on its own. Play-Doh container measures 2 in diameter and 1 high. It also includes 2 stampers for imprinting the Play-Doh with fun designs. The retractable blue ballpoint pen really works! For Ages 5 and Up.

Welcome to the wonderful world of sand art! Use the four sand art colors to create six exciting projects; layer brightly colored sand in your choice of six different shaped bottles and make your own individual designs. There are a countless number of designs you can create; all you need is your imagination! Simply pour varying layers of sand into the bottles, create details with the styling stick, pop the caps in and they're ready for display!

For ages 5 and up.

Contents: 6 bottles (1 circle: approx 2.5 dia x .5, 1 triangle: approx 2.5 x 2.5 x 2.5 x .5, 1 square: approx 3 x 3 x .5, 1 wavy: 2.5 x 4.5 x .5 and 2 frames: 4 x 3.75 x .5), 6 caps, 1 funnel, 1 plastic stick, 4 bags of sand (green, blue, orange and pink) and instructions.

The Smithsonian Mega Science Lab is your ticket to a world of adventure, discover and wonder! Six amazing activities are in this super-safe, super-cool science lab kit! Set up your own weather station, grow a gem-like crystal, build and erupt your own volcano, assemble T-Rex bones, paint a model of the earth and moon and build an eco dome habitat! Includes a full color poster.

For ages 10 and up.

Contents: 1 full color poster with instructions. Crystal Growing Kit: 1 cup, 1 mixing stick, 1 pair of goggles, 1 stone, 1 measuring cup and chemical powder. Earth Model: 1 moon, 1 earth, 1 base, 1 paintbrush, 1 arm and paints. Dino Dig: 1 sand block with dinosaur bones inside, 1 mallet and 1 dowel. Volcano: 1 volcano base, 1 eruption tube, 1 plaster, 1 string and foam tape. Eco Dome Habitat: 1 clear dome, 4 base plugs, 1 bug catcher and 1 eco dome base. Weather Station: 1 weather station body, 1 rain gauge, 1 thermometer, 1 wind velocity indicator, 1 total rain indicator, 1 swivel, 1 swivel cap, 1 compass rose base and 2 mounting screws.