Toilet Paper Sequestration

I propose that sewage and pulped organic landfill waste is pumped into empty oil reservoirs under the sea. The slurry can be picked up along the coast by old oil tankers. The advantage over CO2 gas sequestration is that this would require minimal new infrastructure, but will still trap large amounts of carbon.

You can then help the environment my using as much sustainable forest toilet paper as you can. And most of your rubbish could be put down the drain via a waste disposal unit.