Who wouldn’t want to invent a robot that makes and serves you cocktails, or to build and play a life-sized Operation game? Not to mention creating and wielding your own DIY light saber! Now readers can make their own versions of these nerdtastic crafts (along with 100 more crazy and cool tech projects) with the helpful, handy, and often hilarious Geek Toys. There’s a new movement afoot—a whole generation of makers and tech-savvy innovators who excel at making wild and fascinating projects using electronics and found materials. In Geek Toys, you get a collection of these amazing ideas from the DIY masters at Popular Science magazine—from a theremin you can make for under $15 to a motorized skateboard, from an epic potato gun to an LED lighter you can wave during rock-concert power ballads. It’s never been a better time to be a geek. Activities include: Kit Out the Ultimate All-in-One Brewing Machine Tap a Melon Keg Break into Your Beer Install a Shower Beer Caddy Chill Your Beer Really, Really Fast Disguise Your Brew Reuse Those Red Party Cups Meet the Drink-Slinging Droid Serve Up Shots in Jello Cups Make Drinks Glow in the Dark Mod Your Toaster for Far-from-Average Toast Freeze LEGOTM Ice Cubes Cook a Hot Dog with Electrical Current Wield a Potato Gun Improvise a Planetarium Put on a Liquid Light Show Jam out to a Sound-Reactive Lightbox Wave an LED Lighter at a Concert Party with an LED Glow Stick Disco on an LED-Lit Dance Floor Make a Sonic Tunnel of Fire Turn Your Campfire Green Hold a Flaming Ball in Your Bare Hand Set off a Spinning Fire Tornado Ignite a Home-made Sparkler Wreak Havoc with the Ultimate Squirt Gun Make a Mini Catapult Play with a Bike-Part Spirogram Turn Junk Mail into Pencils Set Up a Turntable Zoetrope Turn an Old Skateboard Deck into a Hoverboard Mix Magnetic Silly Putty Cook Some Ferrofluid Catch a Thrill on a Backyard Coaster Set Up a DIY Pinball Game Enjoy Skee-Ball at Home Build a Mint-Tin Racer Shake Up a Martini in a Mint Tin Strum a Mint-Tin Guitar Carry a Pocket Billard Set Build a Mini Arcade Cinch a Nintendo-Controller Belt Build a Life-Sized OperationTM Game Play Giant Checkers Wield a DIY Light Saber Make a Reflection Hologram Hack Your Magic 8 Ball Go Anywhere with Virtual-Reality Glasses File-Share with a USB Dead Drop Build a Bristlebot Rig an Animatronic Hand Ride a Robotic Giraffe Scratch a Pizza-Box Turntable Craft a Boom Box Duffel Bag Make Your Tie Glow in the Dark Put Headphones in Your Hoodie Use a Glove on a Touchscreen Pump Jams Through an Old-School Phonograph Amplify Music with Paper Cups Make Custom-Fit Earbuds Put a New Spin on an Old CD Amuse Yourself with a Flipperdinger Play a Pocket Theremin