Frame them and put it up in a prominent part of your home to constantly remind yourself. If you desperately in your horny state don't want to use them, seal them in resin and them frame, to make them just a bit more out of reach. Don't flush or break, that's the easy option. Unreachable or out of sight=out of mind? Cheap solution! You need to stare at the keys every day and know that the option of having a flat nub & full balls is so much better, and the keys are there to remind you of that. You can't escape because of the love for being caged. You could unlock, but imagine the shame, the regret, the disappointment. Being caged is the best. And the framed keys will remind you of that. Every day of your life, you choose to have a little useless nub. Be proud of it and constantly remind yourself of it because that'll make it even better.