The first step in my Arduino monitored / controlled orchid vivarium is giving my Arduino the ability to track time with reasonable accuracy and display information on an LCD. I went with a Boarduino for ease of prototyping, but the final build will probably use an Uno or Mega.
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.