A snake robot - that eats rubbish in storm water drains. It has a waterproof camera on the head. If it "sees" a object that is "identified" as rubbish the snake will eat it.
There will be different "species" of robot snake. One to eat glass rubbish. One to eat plastic. One to eat aluminium cans and tin cans. One for general waste compost.
Natural snakes are known for their ability to fit seemingly impossible large food items inside their bodies and crush and decompose these items. A robot snake maybe a solution to waste management of drains.
The robot snakes have a GPS inside and will navigate storm water pipes and return to a base for emptying.
Other robots from Synthiam community

Divideworks's Jd The Headless Horseman
Check out JD dressed up for Halloween!

Ezang's Robot Arm PCA 9685 Arduino On ARC
A quick demo: My PCA9685 and Arduino with 5 servos, MG996R 55g Metal Gear Torque Digital Servo Motor 18.99 for 4 servos...

Leversofpower's Cutting My Teeth. The Floor Crawler
I had been so exclusively focused on the pre-design work for the Wowee Roboquad hack and waiting on parts to arrive from...