Are we neglecting the importance of water? Probably, the answer is YES. Go through this different and versatile project to find a solution.
IR Sensor project with Arduino
How to make Automatic Car Parking System using Arduino and i2c lcd display | Car Parking System
It can be controlled through Google Assistant, Webpage, Bolt mobile app, and also it is capable of self-controlling its movements.
Full procedure with theory explaining the concept behind a line follower robot
Turn on and off the lamp using IR sensor, change lamp color and brightness with button and potentiometer.
A robot pal you can make easily with Arduino
Sanctuary III is prototype which can fly as well as run on surface like a vehicle having a UV-C source to disinfect or sanitize the room.
An automated sanitizing system for shoes is presented throughout this project. Shoe sanitizer is used to disinfect shoes.