Quick legibility hack for the Adafruit TIMESQUARE DIY watch kit: a couple layers of Kapton tape applied to the watch face make it less prone to washing out under bright light. The tape’s color is similar enough to the red LEDs that they shine through with little difficulty, while most ambient light is blocked.
Rubylith film (from a decent old-school art supply store) would probably work as well, if not better. But electronics types might already have the Kapton tape around.
(Sorry, doesn’t help you read binary.)
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.