Tinkering can be described in many ways. If you enjoy experimenting with and repairing different types of parts as it relates to tech, then you'll enjoy this kit. 

Tinkering is fun and intended for life and creative skills. Learning, creating, experimenting, and innovating. That's why STEM encourages all to tinker and empowers them with open-ended experimenting with no single solution.

Arduino Uno is a microcontroller board based on the ATmega328P (datasheet). It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz quartz crystal, a USB connection, a power jack, an ICSP header and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started.

Buy here at $28.50

You can program the BadgerStick (the thin board) to control a myriad of electronics, like buttons, lights, and LCDs. The LED board can be used to display patterns or show text. You can learn all about this cool gadget here. 

The SparkFun Inventor's Kit (SIK) is a great way to get started with programming and hardware interaction with the Arduino programming language. The SIK includes everything you need to complete 16 circuits that will teach you how to read sensors, display information on an LCD, drive motors, and more. You don't need any previous programming or electronics experience to use this kit. You can learn all about this cool gadget here. 

You can integrate your Leap Motion Controller with an Arduino, map your hand motions to your favorite robot, or drive a remote-controlled car over Wi-Fi. 

Functions:

• Highly accurate hand and finger tracking with near-zero latency

• 8 cubic feet of interactive 3D space

• 135° field of view extending above the device

• Compact device at 3" / 80mm long

• USB connection

Download free apps on the Leap Motion App Gallery: VR applications for headsets such as the Oculus Rift and HTC, plus 75+ legacy desktop applications (no longer being updated).

Buy here for $137.50

Makes STEM Education fun! Start out easy with a banana piano. The first setup takes seconds. Then make game controllers, musical instruments, and countless inventions. Advance to additional inputs and multi-key remapping up to 18 keys. Ages 8 to infinity. Turn everyday objects like bananas into touchpads! Connect the world around you to your computer! Setup takes just seconds.

Just plug, clip, and play! No programing knowledge needed. No software to install. Works with Mac, Windows, Chromebook, Linux. If the device supports a USB keyboard or mouse, it should work with Makey Makey!

Buy here for $49.95

The first Chromebooks hit the market in 2011 and since then, nearly every major PC manufacturer has teamed with Google to create branded lines of Chromebooks like the Lenovo Chromebook series.

The big innovation that the Chromebook brought to market was its elimination of the typical, multi-function PC operating system that did everything from boot the system and sort documents, to run programs and play DVDs. Instead, Chromebooks use Google's minimalistic Chrome OS, based on open-source Linux. The Chrome OS, in turn, uses the Chrome web browser as its primary user interface, similar to the way other operating systems might launch programs from the so-called "desktop.”

Buy here for $149.00

The Raspberry Pi 4 offers ground-breaking increases in processor speed, multimedia performance, memory, and connectivity compared to the prior-generation boards, while retaining backwards compatibility and similar power consumption. The Raspberry Pi 4 provides desktop performance comparable to entry-level x86 PC systems. The Raspberry Pi 4 comes in three on-board RAM options for even further performance benefits: 2 GB, 4 GB or 8 GB RAM

Due to the higher power requirements, the Raspberry Pi 4 requires at least a 3.0A USB-C power supply. The CanaKit USB-C 3.5A power supply (UL Listed) that is included in this kit is specially designed and tested for the Raspberry Pi 4. This power supply incorporates a noise filter to provide the highest stability.

Buy here for $199.99

The STEM Programmable Code Roller is a cute and yet very sophisticated rolling sphere filled with programmable robotics. Using the simple and yet highly educational STEM software which accompanies the Code Roller, your children can program this awesome bot to roll around to your content. Do not worry about the Code Roller breaking while you make it adventure around any environment, as it is highly durable.

Buy here at $226.99

Looking to learn to program? Starter Kit to Learn compatible with Arduino IDE platform programming. No previous programming or electronics experience required

Includes the SparkFun RedBoard Qwiic compatible with Arduino. All parts are usable for your own projects once you complete the kit. Let your imagination run after completing the basics.

Includes Full-color, Spiral-bound SIK Guidebook. Never lose your page or fight to keep the book open. Easy to follow instructions guide you through 5 overarching projects.

Complete 16 interconnected circuits that teach everything from blinking an LED to reading sensors. Projects include Simon Says Game and Autonomous Robot

Experiment with Light, Sound, Motion, Displays, Sensors, and Robots. Learn the basics of electronics and build the knowledge to start creating your own projects.

Buy here for $104.69

Jiusion portable magnification is a useful and funny microscope for students, engineers, inventors, and others who need to magnify and explore the micro things.

Be compatible with Mac, Windows XP Vista 7 8 10 11, Linux and Chrome OS. This microscope isn't compatible with iPhone/iPad.

This magnification only support Android smartphone which has OTG function.(How to Check OTG? Download the free app”USB OTG Checker”)

Built-in 8 LED lights, digital microscope’s 2 adjusting knob can change the focus and brightness.

Connected to the devices, you can use the software to record the micro world, capture screenshot and record video. Besides you can use the Windows software’s measurement function to measure the least bit.

Buy here at $24.99

They're flexible robotics kits that combine sensors, motors, and an electronic brain with LEGO Technic components to make robots anyone can build. LEGO has stepped up its robotics game with its newest Mindstorms product. Over four years since the launch of its Mindstorms NXT 2.0 kit, the company has released LEGO Mindstorms EV3. This $349.99 (direct) robotics kit is faster, smarter, and more flexible than the previous version, and stands as one of the best ways to dabble in robotics without investing in tools.

Buy here at $749.99.

Build over 750 experiments with 80 parts. Experiments include: sound activated switch, Lie detector, adjustable light controller, Am radio, rechargeable battery and many more! Parts included: Photo resistor, power amplifier, variable capacitor, Analog meter, solar Cell, computer interface, full color manuals. No soldering - no tools - it's a snap! Snap Circuits parts require no tools and and click together to ensure solid electrical connections. With the included software and pc-interface cable, your child can view waveforms and frequencies, just like an electronics engineer. 

Buy here at $134.99