I know posts on automated plant care are very popular on Gadget Master, so I want to highlight this Arduino appnote - Smart Farm Irrigation System Using Arduino Edge Control.

To address this, Instructables user benrbill came up with a game-changing solution: an automatic drip irrigation system powered by Arduino.

For those starting out in Arduino, there are tons of resources to get better acquainted with the community and the types of projects you can tinker with.