Maker’s Business Card is Actually a PCB, with Common SMD Components Reference Chart
Maker Ilia Baranov aka “Mr. Robot” designed these business cards that are actual PCBs, printed by DirtyPCBs, so you can practice surface-mount soldering common package types (QFP, SOT223, SODs, etc. – there’s room for one through-hole resistor as well), along with reference guides for trace widths, American Wire Gauge standards, and more. Brilliant!
Make a robot friend with Adafruit’s CRICKIT – A Creative Robotics & Interactive Construction Kit. It’s an add-on to our popular Circuit Playground Express, FEATHER and other platforms to make and program robots with CircuitPython, MakeCode, and Arduino. Start controlling motors, servos, solenoids. You also get signal pins, capacitive touch sensors, a NeoPixel driver and amplified speaker output. It complements & extends your boards so you can still use all the goodies on the microcontroller, now you have a robotics playground as well.