Here's one I prepared earlier.

When they speak of the famous inventions
That have changed how we live till we're dead,
Of the cars and the phones and computers,
And the planes flying over our head
And they ask what's the big one that matters?
Is there one that's jumps out of the pack.
When all's said and done
I would nominate one
I give you the Black Plastic Sack.
      Is there trouble all round,
       Is the world running down
       Is this poor planet starting to crack?
       Well my thought for today is,
       Just put it away
       Put it all in that Black Plastic Sack.

Oh my house was a terrible muddle,
With the rubbish piled high all around,
All those things I had thought that I needed,
I knew very soon I'd be drowned.
It was time for a desperate decision,
I knew it was time I should act.
Out of sight out of mind
Is a watchword of mine,
So thank God for the Black Plastic Sack.
    Is there trouble all round �

So into the sack went the rubbish,
And into the sack went the rest,
Into the sack went the shoes and the socks,
And the trousers and sweaters and vests,
And into the sack went the washing,
And the powder that came in a pack �
And into the sack went the washing machine �
Oh that wonderful Black Plastic Sack.
    Is there trouble all round �.

And into the sack went the bills still unpaid
And those threatening letters in red
Into the sack went the records and tapes
And the books that I never had read,
And into the sack went my cheque book,
And that credit card breaking my back,
It's goodbye and good riddance my flexible friend
You belong in that Black Plastic Sack.
    Is there trouble all round�

They say money's the root of all evil,
All the hatred and greed and the vice
We'd all be far better without it,
I think you should take my advice
So I'll make you a modest proposal
When you leave I'll be there at the back.
Just you throw it away, you'll be free from this day,
Put it there in my Black Plastic Sack.
      Is there trouble all round �