You could try selling it on the streets as high grade skunk. Tell prospective customers that it's good Sh1t. That way they can't get you under the trades descriptions act later on.
If you haven't got time to listen to a Phil Collins album, shove some into your ear holes as a reasonable substitute.
The list of uses is potentially endless. Of course it goes without saying that it has to be the multi-purpose kind. None of the above would work with the your standard compost.
Put a pile of multi-purpose compost on an armchair, and some slippers in front of the chair. Now ring the police and tell them your grandad's spontaneously combusted.