If you could un-invent something, what would it be?

For me, it might be a particular restaurant that I would un-invent. However, putting yourself in such a position would require great responsibility. If, we had the power to un-invent, that could be dangerous?

1 Timothy 6:6-8 MEV

⁶ But godliness with contentment is great gain. ⁷ For we brought nothing into this world, and it is certain that we can carry nothing out. ⁸ If we have food and clothing, we shall be content with these things.