Accidentally drop cardboard down the toilet how do you get it out?

To retrieve cardboard stuck in the toilet, first turn off the water supply to prevent any flushing. Use a pair of gloves to reach into the toilet bowl and carefully pull out the cardboard if it's visible. If it’s lodged deeper, you may need to use a toilet auger or a Plumbing snake to dislodge it. If these methods fail, consider calling a plumber for assistance.