3d_product_ideas
Printables Robot
https://www.printables.com/search/models?q=inspection+robot
https://www.printables.com/search/models?q=inspection
https://www.printables.com/search/models?q=submarine
https://www.cpsdrone.com/
Robot Arm
Six Axis Universal Copy
Encorders
https://www.printables.com/search/models?ctx=models&q=rc+car
https://www.printables.com/search/models?ctx=models&q=rc+tank
https://www.printables.com/search/models?ctx=models&q=fishing&published=year
https://www.printables.com/model/161385-hamms-beer-fishing-magnet
Ended up a bit big, but can be made into a magnet or used as a sign. Use 1/8" dia x 1/16" thick N52 Magnets