We can only imagine how great it would be to receive one of these messages. From deMilked:
Greeting cards are cool and all, but matchbox postcards are even cooler. Enter “shop3xu”, a shop specializing in this kind of cool little objects. They use the sliding aspect of the matchbox to great effect, revealing unseen messages that complement the top cover, as well as moving decorations for the top.
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.