Most wet labs have trash cans filled with plastic pipette tips. Forget the Great Pacific Garbage Patch, have you see the Great Atlantic Pipette Tip Patch?
While it is fascinating to imagine herrings jousting each other with 1 ml pipette tips on their heads, it’s also atrocious. If you have easy access to an autoclave you can prevent this just by aspirating some filtered water through the tip after you use it and then putting it back into a second pipette tip rack for autoclaving.
Yes, really. People actually do this. Try it. Do a control, see if it works for your research, then go save the world.